01
Survive
The atmosphere is the enemy. Every step outside is a countdown.
The world
A planet that wants you gone
On a hostile alien world the air is unbreathable and the cold will kill you. The outside is a countdown — your base is survival itself. Scavenge, craft, build, and keep each other alive. A 2–8 player PvE co-op survival base-builder.
- 2–8
- Players, co-op
- PvE
- No griefing, just survival
- ∞
- Hostile open world
Three things to know
02
Build
Your base isn't decoration — it's what keeps the air and warmth in you.
03
Together
2 to 8 players. One planet. Shared survival.
The feeling
Out here the horizon never ends, and nothing is coming to save you.
Sun-scorched. Silent. Yours to hold.
Where we're headed
The road to the surface
An honest look at what we're building and in what order. The foundations are already standing — now we're making them feel alive. Dates are intentionally loose; this is early development and the plan will shift as we learn.
Built
Working today — the foundation under everything else.Inventory & items
The backbone system every other feature is built on.
Base building
Place, snap, and raise the shelter that keeps you breathing.
Crafting & resources
Gather, process, and build — the core loop closes.
Survival pressure
Oxygen, temperature, and power — the planet pushing back.
Save & persistence
Your world and your base, remembered between sessions.
Building now
What we're heads-down on today.Interface & HUD
The readouts that keep you alive — oxygen, heat, integrity — and the menus around them.
Survival comforts
Water, food, and stamina — softer needs that reward a working base.
Up next
The features lined up after that.Co-op
2–8 player co-op. Survive together on one shared world.
Compass, waypoints & map
Find your way back home — and decide how far out to push.
Storms & anomalies
Rare events that test the base you built — and hint at something deeper.
Later
On the horizon — direction, not promises.Biomes & deep zones
Harsher ground the further out you push, with rarer rewards.
The colony mystery
Ruins, logs, and the cosmic truth of what happened here.
Atmosphere & audio
The sound, weather, and feel of a world that wants you gone.
First playtest
A vertical slice in your hands — the first real build to play.
Early in development
Land on Calox early
Calox is early in development — no release date, no promises we can't keep. Come along, watch it take shape, and help us shape it.
Join the Discord
Best place to follow along and talk to the dev.
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