Pixel Rain is a relaxing falling-sand physics sandbox where every cell on a giant grid obeys its own rules. Pour water, drop sand, ignite lava, grow crystals — then sit back and watch it all interact.
There's no campaign, no fail state, no pressure. Just you, a canvas full of physics-driven pixels, and a lot of satisfying emergent behaviour.
Paint pixels. Watch chaos unfold.
Pixel Rain is a relaxing falling-sand physics sandbox where every cell on a giant grid obeys its own rules. Pour water, drop sand, ignite lava, grow crystals — then sit back and watch it all interact.
There's no campaign, no fail state, no pressure. Just you, a canvas full of physics-driven pixels, and a lot of satisfying emergent behaviour.
Hundreds of Materials to Paint With
- Sand — piles and settles naturally
- Water — flows, pools, and reacts with almost everything
- Lava — turns water into steam, melts ice, ignites everything nearby
- Acid — slowly corrodes stone, metal, and crystal
- Oil — floats on water, highly flammable
- Crystal — grows from water and ice into spreading formations
- Plant — feeds on water and spreads organically
- Plasma — decays into sparks over time
- Void — silently erases everything it touches
- Magnet — pulls nearby metal cells toward it
- Plus: Paint, Slime, Foam, Snow, Ice, Smoke, Spark, Stone, Metal
- …and 400+ more — from concrete, salt and sawdust to charged crystal, living wood and brimstone. Combine any two materials and you might discover a brand-new one.
Features
- 60 FPS physics simulation on a dynamic grid up to ~620×480 cells
- 400+ paintable materials and brush presets with scatter, sparkle, and jitter tuning
- 6 customizable quick-slot brushes
- Adjustable gravity, flow speed, brush size, and zoom
- 3 procedurally synthesized music modes: Rain, Magma, and Aurora
- Procedural sound effects keyed to each material — no audio files, all generated in real time
- One-button MP4 clip export (R to record, R to save)
- Showcase cinematic mode (T) — the camera finds the most active region of your canvas and records it automatically
- Save and load your canvas, synced across devices with Steam Cloud
- 100+ Steam achievements with progress bars and in-game toasts
- 50+ discoverable recipes — combine two materials to alchemize a third
- Steam Workshop — design your own materials, brushes and animations with built-in editors (plus a DevMode code editor), then share them and subscribe to community creations
- Built-in tutorial to get you started
- Custom color palette and lobby theming
Early Access
Pixel Rain is in Early Access. The core simulation is fully playable and stable. Expect new materials, brush tools, and quality-of-life improvements as development continues. Feedback welcome.
