Snecko

Snake, but it's a roguelite. Procedural crystal walls, boss fights, contraband upgrades, and permadeath — in the terminal or the browser.

Quick Start

nvm use
npm run play        # terminal
just serve          # browser

How to Play

Arrow keys or WASD. Eat food to clear acts. Each act generates a new layout. Your snake grows as you eat within an act and resets at the start of the next; later acts ramp up the difficulty.

Between acts you pick upgrades that modify your run. Survive long enough and you'll face a boss fight.

Commands

just play           # terminal mode
just serve          # browser mode
just check          # format + lint + test
just play boss      # jump straight to boss fight

Design

• Zero runtime dependencies — ESM modules, no bundler
• Bitmask grid with 31-bit chunks (Uint32Array)
• Ring-buffer snake with O(1) movement
• Runs in both <canvas> and ANSI terminal from shared game logic
• Procedural grid generation using crystal shapes

Tests

npm test