Expedition: Into Darkness vs Kaidan

• Perspective: Third-Person
• Multiplayer: 3-Player Online Co-op (Drop-in/Drop-out)
• Setting: Japanese Folklore / Cosmic Horror
• Platforms: PC (Steam)
• Release Window: TBA
• Unique Feature: A unique blend of Soulslike melee combat with a tense, replayable 'extraction-lite' gameplay loop set in a Japanese cosmic horror world.

• Trained Camp Warhound: Alerts solo adventurers to hidden ceiling ambushes, growls when enemies flank in the dark, and carries secondary torch supplies.
  Canine (Mastiff)
• Scouting Familiar Raven: Flies through iron barred gates and small dungeon fissures to reveal enemy positions in adjacent rooms before opening doors.
  Arcane Corvid

• Co-op Teammates: In the game's 3-player co-op mode, other players act as your companions. Team play is encouraged through unique synergies, allowing players to specialize in roles like tank, healer/debuffer, or DPS.
  Human (Player)

• Antediluvian Stone Tablets: Found locked inside trapped subterranean reliquaries; deciphered in camp to unlock advanced forge blueprints.
• Eldritch Void Crystals: Mined from pulsating purple geode clusters in abyssal chambers; used as catalyst currency for dark god pacts.
• Knightly Heraldic Seals: Looted from the remains of fallen noble expeditions; unlocks custom shield emblems and armor livery patterns.

• Relics: Powerful artifacts that must be successfully extracted from Ikaiguchi. They are the primary items used to unlock new combat moves and powerful character upgrades.
• Lore Items: Found through exploration. The story unfolds through item descriptions and environmental storytelling rather than traditional cutscenes.

• Japanese Folklore
• Cosmic Horror
• Soulslike
• Extraction
• Dark Fantasy
• Survival
• Mythology

• Modular Bastard Sword: Two-Handed / One-Handed Hybrid Blade
  A versatile steel blade customizable with various crossguards and pommels, delivering balanced slashing arcs and armor-piercing thrusts.
• Heavy Flanged Mace: One-Handed Bludgeon
  Cast-iron blunt impact weapon designed to crack heavy plate armor, stagger leaping monstrosities, and shatter bonekin skeletons.
• Silver-Edged Halberd: Polearm
  Long-reach pole weapon forged with consecrated silver along its axe blade and spike, permanently preventing undead resurrection.
• Recurve Yew Bow: Ranged Archery
  Flexible yew wood bow paired with hand-crafted bodkin arrows, allowing silent precision eliminations from shadows.
• Occult Handgonne: Black Powder Firearm
  Rudimentary iron hand-cannon firing lead shot and burning sulfur, devastating close-range clustered monsters with explosive shrapnel.

• Katanas: Melee
  A balanced and iconic melee weapon, likely offering a mix of speed and precision.
• Polearms: Melee
  Long-reaching weapons like spears or naginatas, excellent for controlling space and keeping enemies at a distance.
• Axes: Melee
  Heavy, high-damage weapons designed to break through the guards of formidable Yokai.

• Custom Quilted Gambeson: Impact Absorption +25%, Stamina Recovery +15%; flexible layered linen padding customizable with heraldic color dyes.
• Riveted Chainmail Hauberk: Slashing Deflection +55%, Piercing Resistance +35%, Movement Speed -5%; interlocking steel rings offering balanced dungeon defense.
• Forged Gothic Plate Cuirass: Blunt Deflection +70%, Slashing Immunity +80%, Stamina Drain +20%; heavy tempered steel plate providing impenetrable frontal protection.
• Reinforced Heater Shield: Block Stability +65%, Directional Parry Window +0.2s; heavy wooden shield bound in steel, featuring custom painted heraldry.

• Armor Sets: Players can customize their Seeker with different armor sets and masks. In addition to providing defensive stats, these cosmetics can also influence gameplay and narrative by affecting how certain NPCs or Yokai interact with the player.

• Scavenger's Oilcloth Cowl: Waxed weather-resistant hood and face wrap protecting against noxious spores, tintable with charcoal or forest green dyes.
• Mercenary's Padded Vambraces: Tough boiled leather forearm guards with adjustable brass buckle straps and personalized crest embossing.
• Expeditionary Wool Cloak: Heavy woven travel mantle featuring custom clan embroidery, worn over armor to reduce cold penalties in deep flooded vaults.

• Customizable Armor & Masks: Players can customize their Seeker's appearance with various armor sets, masks, and style sets. These are not just cosmetic, as they can also grant strengths, weaknesses, and passive bonuses that affect gameplay.

Operates on a classless, organic skill progression system where proficiencies level up naturally through action and survival. Core skill disciplines include: Martial Prowess (enhances stamina management, weapon swing recovery, and four-directional parry windows), Marksmanship & Archery (governs draw speed, bow steadiness, and manual arrow fletching efficiency), Survivalism & Scavenging (improves mineral mining yield, lockpicking success, and toxic gas resistance), and Occult Pacts (allows players to cast aside religious piety to make pacts with dark gods beyond the Empyrean, trading sanity or health for forbidden sorceries).

Progression is player-driven and tied to successful extractions. Players use gathered resources like blood, essence, and memory fragments to unlock permanent buffs and upgrade gear at a central hub. A 'Sigil' system acts as a skill tree, allowing players to unlock new combat moves and passive abilities. Weapons and gear can be crafted, upgraded, and enchanted.

Features procedurally assembled, multi-tiered dungeon complexes branching beneath a central surface sanctuary. Key subterranean zones include: The Forsaken Crypts (tight limestone corridors lined with burial sarcophagi, tripwire dart traps, and wandering bonekin), The Drowned Catacombs (partially submerged cisterns and flooded vaults inhabited by predatory leaping crabs and aquatic monstrosities), The Fleshmaker's Chambers (chambers dominated by horrific pulsating biological growths and fleshkin incubators), and The Eldritch Sanctum (abyssal sanctums illuminated by eerie purple void flames where powerful occult sorcerers channel dark gods).

The game features a large, interconnected world with multiple biomes, but is explored through mission-based 'incursions' or 'runs'. Each zone is a haunted, procedurally arranged area with its own unique Yokai, minibosses, and a final Chordbearer target. The world state can mutate between runs based on player actions.

• Sanctuary Minecart Hoist: Underground Winch Transport
  Heavy-duty mechanical wooden lift utilized at base camp extraction points to haul heavy treasure chests up from the subterranean depths.
• Expedition Supply Wagon: Overland Transport
  Reinforced horse-drawn cart stationed at the surface camp serving as the primary hub for organizing equipment and gear before raids.

• Fleshkin Stalker: Aberrant Abomination
  Skinless, mutated quadrupeds that ambush expeditions from shadowed ceilings, highly vulnerable to lacerating edge damage.
• Bonekin Vanguard: Reanimated Undead
  Ancient skeletal legionnaires wielding rusted armaments that endlessly rebuild their shattered frames unless struck down with silver.
• Armored Cave Goblin: Subterranean Scavenger
  Cunning tunnel raiders wearing makeshift iron plates and shields, requiring piercing arrows or heavy blunt trauma to defeat.
• Giant Cave Leaper: Subterranean Crustacean
  Heavily chitonous ambush predator lurking in flooded cisterns that pounces onto explorers with bone-crushing pincer claws.
• Abyssal Brood Spider: Giant Arachnid
  Venomous subterranean spider that coats narrow corridors in flammable web traps and spits paralytic neurotoxins.

• The Camp Quartermaster: Merchant & Logistics Overseer
  Grizzled former expedition captain who buys salvage, sells base supplies, and manages player storage chests in the surface camp.
• The Blind Alchemist: Crafting & Concoctions Master
  Sightless scholar who brews medical unguents, anti-venom tonics, and illuminating oil draughts from dungeon specimens.
• The Occult Heretic: Forbidden Knowledge Broker
  Exiled monk who trades forbidden antediluvian lore, unlocks occult skill trees, and brokers contracts with entity patrons.
• The Corrupted Hierophant: Abyssal Boss
  A twisted high priest consumed by dark god pacts, commanding legions of bonekin from an unholy throne of desecrated relics.

• The Seeker: Playable Protagonist
  A lost soul resurrected by the Envoy, forced to fulfill a dark pact. The player's identity is intentionally vague, with progression and customization defining the character.
• The Envoy: Key NPC / Quest Giver
  A cryptic, mystical entity who holds power over the Seeker due to their pact. The Envoy guides the player and is central to the game's 'deal with the devil' allegory.
• The Chordbearers: Bosses
  The primary antagonists and main targets of the extraction missions. These are powerful, unique beings that anchor the corruption in each region of Ikaiguchi.

• Descent into the Black Vaults: Introductory Scavenging Expedition
  Enter the upper crypts, collect 50 units of iron scrap from sarcophagi, and safely reach an extraction rope before light sources fail.
• The Silver Cleansing: High-Threat Dungeon Raid
  Venture into the Bonekin Sepulcher with silver-imbued weapons, destroy three reanimation shrines, and eliminate the Bonekin Patriarch.
• Communion Beyond the Stars: Occult Boss Milestone
  Navigate toxic gas chasms to discover the altar of the Void Father, offer an ancient relic, and survive an onslaught of eldritch horrors to extract.

Supports cooperative PvE gameplay for 1 to 5 players per expedition. Groups can venture into the catacombs together, sharing light sources, coordinating ambushes, covering flanks, and reviving downed allies before their bleeding timer expires. Matchmaking allows private password-protected lobbies for friends or public squad matching. While extraction is strictly PvE-focused, friendly fire and environmental traps demand constant team communication.

Expedition: Into Darkness launches in Q4 2026 for PC on Steam for $29.99 USD, following extensive public playtesting and a demo release on August 6, 2026. A Deluxe Supporter Edition is planned at $39.99 USD, featuring the digital soundtrack by FMOD spatial sound artists, a high-resolution concept art book, and exclusive cosmetic dyes, coat-of-arms heraldry, and weapon skin engravings that carry over between permadeath character runs.

Antediluvian Interactive has detailed an early-access to 1.0 roadmap focusing on regular content drops. Planned post-launch expansions include new dungeon biomes such as the Sunken Foundry and Cursed Ossuary, expanded crafting modularity (dual-wielding weapon grips and heavy crossbow winches), additional eldritch patron gods with unique pact abilities, and roaming world bosses that wander between procedural chambers.

• Q: What is Expedition: Into Darkness?
  A: Expedition: Into Darkness is a hardcore, third-person medieval dungeon crawler and extraction looter featuring procedural dungeon layouts, tactical directional melee combat, and permadeath mechanics.
• Q: Who is developing Expedition: Into Darkness?
  A: The game is being developed and published by Antediluvian Interactive, an independent game development studio based in Stockholm, Sweden.
• Q: What engine powers Expedition: Into Darkness?
  A: Expedition: Into Darkness is built on the Unity Engine, utilizing UnityBurst and IL2CPP SDKs along with the FMOD Audio Engine for spatial sound.
• Q: Does the game feature permadeath?
  A: Yes. When your character dies during an expedition, that character and all inventory carried on their person are permanently lost. However, banked resources and upgrades in your base camp remain safe.
• Q: How many players can play together in co-op?
  A: The game supports 1 to 5 players in online cooperative multiplayer, allowing you to venture into the dungeons solo or team up with up to four friends.

• Q: What is Kaidan?
  A: Kaidan is an upcoming third-person melee action game that blends the challenging combat of Soulslikes with the high-stakes loop of extraction games, all set in a dark fantasy world inspired by Japanese folklore and cosmic horror.
• Q: Is it a multiplayer game?
  A: It is primarily a single-player experience but supports seamless drop-in/drop-out online co-op for up to three players.
• Q: What does 'Extraction-Lite' mean?
  A: It means the core gameplay loop involves entering a dangerous, procedurally-arranged zone, gathering resources and completing objectives, and then successfully escaping (extracting) to keep your loot. Failure can result in losing progress and items from that run.
• Q: When will it be released?
  A: As of August 2025, there is no official release date for Kaidan. A playable demo has recently been shown at events like Gamescom 2025.

Built in Unity Engine with high-definition scriptable rendering pipelines. Highlights include advanced volumetric fog, realistic torch and lantern light attenuation, dynamic directional shadow-casting from moving player lanterns, procedural blood splatters, and meticulous dark-fantasy armor texturing exhibiting surface scratches, dirt accumulation, and rust over time.

Powered by the FMOD Audio Engine and Resonance Audio spatialization SDKs. The soundscape emphasizes harrowing psychological horror, featuring echoing dripping water, distant scratching claws inside stone walls, creaking leather armor, and bone-snapping combat impacts. The musical score blends dark ambient drones, medieval hurdy-gurdy droning, and eerie choral chants that crescendo dynamically when horrors breach the player's lantern radius.

Employs an immersive, minimalist diegetic HUD designed to heighten claustrophobia and tension. Health, stamina, and sanity are represented through subtle bodily audio-visual cues and compact meters. Inventory management features an interactive grid system where items have distinct weight and volume, alongside a modular workbench interface that allows players to inspect 3D weapon cross-sections, switch hilts, blades, and customize leather wraps and metal dyes in real-time.

Provides a comprehensive suite of accessibility options: full controller support with native DualSense and DualShock controller mappings, adjustable text and UI scaling, stereo and surround sound channel mixing, customizable volume toggles (ambient, effects, voice, master), colorblind palette adjustments for status effects, toggleable camera bob, and custom field-of-view (FOV) sliders.

• Built on the Unity Engine utilizing Unity Burst compiler, IL2CPP runtime, and FMOD spatialized audio SDKs. The game relies heavily on dynamic point-light rendering, volumetric darkness, and ragdoll physics simulations across procedural dungeon levels.
• Laptop Performance Note: Dynamic real-time lantern illumination, shadow-casting torches, and horde encounters can tax mobile GPUs. Gaming laptops should target at least 75W TGP and operate in high-performance cooling modes to prevent thermal downclocking during extended dungeon runs.
• Laptop Consideration: G P U T G P: A mobile GPU running at 75W-100W+ TGP is recommended to maintain stable 60 FPS in dense subterranean chambers with overlapping light sources.
• Laptop Consideration: Cooling Thermals: The Unity multi-threaded job system creates sustained load across multiple CPU cores; utilizing a cooling pad or elevated rear stand is advised.
• Laptop Consideration: C P U Power Limits: Avoid battery-saver profiles; lock CPU wattage to ensure four-directional combat physics and enemy AI pathfinding remain responsive.
• Laptop Consideration: M U X Switch Optimus: Bypass integrated graphics via discrete MUX switch to eliminate micro-stuttering during multi-enemy ambush sequences.
• Optimization Detail: Upscaling Tech: Supports AMD FSR and dynamic resolution scaling to boost frame rates in dark, particle-heavy catacombs.
• Optimization Detail: Key Settings Impact: Shadow Quality, Volumetric Fog, and Ambient Occlusion exert the largest impact on rendering frame rates in unlit caverns.
• Game Name: Expedition: Into Darkness

• SPECULATIVE PC SYSTEM REQUIREMENTS. As official specs were not provided, these are hypothetical projections for a next-generation title built on Unreal Engine 5.
• Laptop Performance Note: A title like this would demand a high-performance gaming laptop. Actual performance would vary significantly based on the final game's optimization and the laptop's specific hardware configuration.
• Laptop Consideration: G P U T G P: Maximum TGP for the laptop's GPU would be essential to handle the advanced graphical features, eerie lighting, and heavy particle effects.
• Laptop Consideration: Cooling Thermals: The game's intense, visually demanding boss fights will require a laptop with a cutting-edge cooling solution to prevent thermal throttling.
• Laptop Consideration: C P U Power Limits: A powerful multi-core mobile CPU will be critical for handling the complex AI of the Yokai and physics-based combat.
• Laptop Consideration: M U X Switch Optimus: A MUX switch or NVIDIA Advanced Optimus would be a critical feature for reducing latency and ensuring the best possible performance in the timing-based melee combat.
• Game Name: Kaidan

• Upscaling Tech: Supports AMD FSR and dynamic resolution scaling to boost frame rates in dark, particle-heavy catacombs.
• Key Settings Impact: Shadow Quality, Volumetric Fog, and Ambient Occlusion exert the largest impact on rendering frame rates in unlit caverns.

• G P U T G P: A mobile GPU running at 75W-100W+ TGP is recommended to maintain stable 60 FPS in dense subterranean chambers with overlapping light sources.
• Cooling Thermals: The Unity multi-threaded job system creates sustained load across multiple CPU cores; utilizing a cooling pad or elevated rear stand is advised.
• C P U Power Limits: Avoid battery-saver profiles; lock CPU wattage to ensure four-directional combat physics and enemy AI pathfinding remain responsive.
• M U X Switch Optimus: Bypass integrated graphics via discrete MUX switch to eliminate micro-stuttering during multi-enemy ambush sequences.

• G P U T G P: Maximum TGP for the laptop's GPU would be essential to handle the advanced graphical features, eerie lighting, and heavy particle effects.
• Cooling Thermals: The game's intense, visually demanding boss fights will require a laptop with a cutting-edge cooling solution to prevent thermal throttling.
• C P U Power Limits: A powerful multi-core mobile CPU will be critical for handling the complex AI of the Yokai and physics-based combat.
• M U X Switch Optimus: A MUX switch or NVIDIA Advanced Optimus would be a critical feature for reducing latency and ensuring the best possible performance in the timing-based melee combat.