Slidy Guy

Highscores

Settings

Appearance

Color theme Switch between dark and light modes.

Gameplay

Borderless mode Wrap around the arena edges instead of crashing into walls.

Top-down camera Lock the camera to an overhead view and enable direct WASD/arrow controls for manual play or AUTO runs.

Performance 2D mode Disable lighting, shadows, and reflections while swapping materials to unlit variants for maximum performance in manual or AUTO runs.

AUTO Let an AUTO mode script steer the snake. The modal below documents every input and the required outputs for your engine.

AUTO turbo Simulation speed multiplier

1x

Help center

Each mode tweaks the grid size, obstacle count, speed curve, and scoring bonus. Pick the vibe that matches your focus level.

Even Calmer Slowest speed, no obstacles, no speed or negative power ups, and the run never ramps up. Perfect for relaxing reps and new players.
Calm Balanced arena with standard power ups, light speed scaling, and the baseline score multiplier.
Sharp Faster base pace, extra obstacles, and double score value for those comfortable with tighter movement windows.
Relentless Largest grid, the quickest snake, the densest obstacle layout, and triple scoring for high-intensity runs.
Impossible Blinding speed, maximum obstacles, and brutal ramping where only perfect focus survives.

AUTO mode

AUTO mode hands control to JavaScript that you provide. Paste a strategy below to replace the built-in pathfinding.

When AUTO is enabled, each finished run is auto-saved to the leaderboard as "AUTO" and the next run begins automatically.

State input

state.head – {x, z} tile for the current head.
state.direction – the current movement vector, already clamped to cardinal steps.
state.score – the current run score.
state.snake – ordered array of body tiles (head first) rounded to the grid.
state.apples – apple tiles with { x, z, duplicate } metadata.
state.powerUps – active pickups with { x, z, type }.
state.activePowerUps – currently applied effects with { type, remaining } and metadata such as value for multipliers or portals for portal pairs.
state.portals – when active, the portal endpoints and remaining duration.
state.obstacles – static hazards {x, z}.
state.trail – trail tiles with { x, z, burning, life, flash } so your logic can dodge burn penalties.
state.bullets – active projectiles with { x, z, direction, life }.
state.grid – { size, half }.
state.borderless – true when wrap mode is on.
state.timers – raw countdowns for active effects plus powerSpawn (seconds until the next pickup) and trailCross.
state.utils – helper functions: clamp, manhattan, directionTo, rotateLeft, rotateRight, reverse, vector (cardinal clamp), and randomChoice.
state.meta – run metadata: { difficulty, score, applesEaten, snakeLength, moveInterval, baseMoveInterval, powerSpawnInterval, scoreMultiplier, elapsedTime, moves } plus lifecycle helpers: runId (increments every restart), gameStarted, gameOver, and paused.

Expected output

Return a cardinal direction as an object { x, z }, an array [x, z], or commands like "left", "right", "forward", "back", "north", "south", etc. Values are clamped to -1, 0, or 1, and invalid responses keep the previous heading.

AUTO mode script

SLIDY GUY

Highscores

Run ended

Highscores

Settings

Help center

AUTO mode