Free online co-op demo · Android
An immense, changing fungal underworld. Eight players share one living world.
No GPU, no account, no model download, no server setup. Install it and walk in.
Build 0.4.0-public-demo8 players per worldAPK 168 MBAndroid 8+ · Thor tablet
Gameplay
Recorded from the shipped Android build on the public server, upper screen on the left and the lower screen on the right, with the game's own music: creation, the walk out of Gillhearth, a cave spider, a hare fight with aimed strikes, harvesting the leg, and bonding it at camp.
Grafting
Parts taken from creatures can be bonded onto your own body at camp or at a settlement's graft bench. A professional bench guarantees a full-strength bond. A surgeon can also move your head onto a new body. Your name, class, skills, possessions and memories stay with the head, while stats, senses and anatomy follow the body. The Chitinborn, with four working arms, are playable.
Every head graft is animated as it looks when it's attached. These are a Mycelid wearing each one, assembled from the game's own frames.
The limb grafts as the game draws them in battle, idling.
Every head and limb slot takes a graft on its own, so they mix freely. A few of the bodies you can build, drawn from the same layered frames the game uses:
The approved design for each part. Every in-game graft is built from one of these.
What the game actually loads. Each graft is cut into separate pieces for every pose, direction and animation frame, then packed onto one sheet.
A Chitinborn takes a hare's leg, cuts away its own, and bolts from the next fight. These are the actual screens, in order, from the released game connected to the server.
What this is
Deepwarren is a co-operative survival crawl through a fungal underworld. The creatures, the factions and the roaming commanders run on a simulation that keeps going between your visits. It remembers, it decays, it spreads, and it changes what waits for you next time.
01 · Ecosystem
Creatures eat, hunt, graze, flee and dig on their own. A spider on the far side of the map keeps living while you walk back to camp.
02 · Bodies
Head, torso and each limb can be replaced with parts taken from what you fight. Spider fangs, raptor forelimbs, hare hindlegs.
03 · Shared world
Not eight copies of a map. What another player kills stays dead, and what they leave behind stays there.
From the shipped build
Every frame below is from the public build on the public server, one adventurer, one sitting.
Captured from the released build
Every frame on this page is a screenshot of the game running. Nothing is mocked up. The wide frame is the world display. The smaller ones are the lower display, a real second screen that the launcher sets up for you. Click any shot to enlarge it.
The demo's playable race. Chitinborn have a hard shell, six legs and four working arms. They can cut one of their own limbs away with a knife to make room for a graft.
Battle
Fights are turn-based and physical. You pick which part to strike, and the creature does the same. A part beaten to zero turns purple-black and stops working: a dead leg slows you, a dead arm weakens your blows. It mends over time, or you can bandage it mid-fight. Losing does not always mean dying.
SPORA, a Mycelid kindler, played on the live server. It harvested a Cave Spider arm and a Spore Hare leg, grafted them on at camp, then went back out to hunt.
Mushroom-folk survive losing their cap. SPORA took the head from a Spore Hare it had killed, cut off its own cap at camp and wore the hare's head in its place, then went looking for a Cave Spider. A worn head lets you pass as that creature's kin.
Same trick, better donor. SPORA killed a Cave Spider by striking its abdomen so the head came through intact, cut its own cap at camp again and grafted the spider's head on.
Screen recordings of the released game connected to the server. They aren't sped up or edited, just trimmed.
What lives down here
Each one is animated from the game's own sprite sheets, the same frames the game draws.
The playable folk
Mushroom-capped people of the hollows. You start as one, and you rebuild yourself as you go.
Apex predator
Stone-slab ridges down its back and no predator above it. It eats anything it can catch, including you if you are slow and alone.
Predator
Hunts moss slimes and glow beetles and nests in the dark corners of the map. Its fangs are worth taking if you survive the fight.
Companion
A cat that follows you through the hollows. Feed it spore mats and it will hiss when something is waiting to ambush you.
Grazer
A hare grown through with mushroom caps. It eats fungus and flees; its head is the one SPORA wore.
Colony worker
Workers of the gallery colony. They cocoon what they catch and carry it home.
Colony heart
The swollen queen at the centre of the ant galleries.
Ambush predator
Waits motionless and strikes with raptor forelimbs, the same limbs a Mycelid can take.
Scavenger
An armoured scavenger of the tunnels. Its legs can be taken as grafts.
Grazer
A soft sap-drinker of the galleries. Its legs can be taken as grafts.
The demo also runs spore hares and other grazers, plus a commander with her own patrol: Rundle Blackgill, Scout-Captain, who keeps her own memory of what she has seen and heard.
The finished battle rigs, idle and attacking.
Played from the shipped sprite sheets, frame for frame: walks, battle stances, attacks and deaths. The passage opens and closes the way it does in the game. Creatures still drawn as placeholders are left out.
The world
One hand-built floor, and it is big. The demo starts you at Gillhearth Refuge and ends at the way down.
The actual props placed across the map, shown from the shipped files.
Below the hollows
The next floor down is an ant colony that farms: nursery courts, brood vaults, a queen's chamber and aphid folds worked by the galleries' own castes. Beat the Dusk-Eyed Wolf at the east end of the Hollows and the way down opens. The galleries are playable: find the nursery where Dewclaw hides and the Gallery Queen beyond the Rent. The way back to the Hollows stays open.
Room art from the Floor 4 export, with each room's layers composited. These are the rooms' layered art on its own.
Music
The score is written for the General MIDI orchestra of 80s and 90s SNES and DOS games: strings, brass, timpani and harp, all thin and bright the way that hardware sounded. Every place and every fight has its own cue. These are the tracks that ship in the game.
TitleThe main menu.
OverworldThe open paths: Lantern Rise, Crown Walk, Stalk Passage and the rest of the Hollows.
BattleFights in most of the Hollows.
Battle, deep variationFights among the roots and the ore.
CampGillhearth Refuge, Elder Terrace and the Mat Beds. It also plays when your run ends.
GroveHollow Grove, Spore Basin, the Rot Garden and the other growing places.
OreThe Ore Wolf's Den, Drowned Threshold and the mineral veins.
RootsLong Roots, Fallen Crossing and Wolf Run.
DefeatWhen a fight goes against you.
Co-op
One shared world, one set of creatures, one ecosystem. The world is computed on the server and streamed to you as it changes, so your device does not need a GPU.
Join in seconds
The APK already knows the server. There is no account and nothing to configure.
When it is busy
If all eight seats are taken, the game shows your place in line and lets you in when someone leaves. Host downtime is reported separately from a full world.
Your character
Characters are saved, grafts included. Upgrade the app in place and you keep them. Uninstalling or clearing app storage loses them.
Get it
Current build 0.4.0-public-demo. On Android or a Thor tablet, download the APK and open it. Android may ask you to allow installs from this source.
New in this build: character creation shows your starting HP, attack and defense on the top screen; the Body page lists every graft you wear; battle pacing and limb markers were tightened; and cutting caps no longer stalls.
SHA-256 of the current APK · checksum file4ea582682aec37389ea28e15462881334f2acfc9773dbbd926c8653a04e0fe4c
Step-by-step instructions, including what to do if Windows blocks the downloaded script, are in the setup guide. Every build is listed under Releases.
Keyboard
These are the emulator bindings. A tablet's own buttons do the same things.
Arrow keys also move. Click the lower game display first if the emulator has lost keyboard focus.
Straight answers
This is an early demo. We would rather tell you the limits than have you find them.