1681 Engine2D games for the web, any art style

Scenes, a fast ECS, Tiled maps, input on every device, rigged characters, light and music, and multiplayer that a server can replay bit for bit. Built on PixiJS 8, in TypeScript. Pixel art gets a module of its own.

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API reference

Scenes and a fast ECS

A stack of scenes with async loading, a fixed-step simulation, and an entity–component–system on sparse sets with typed-array columns — a step over 50,000 bodies in a tenth of a millisecond.

Tiled maps and assets

Load images, sprite sheets and Tiled maps with progress; maps draw in culled chunks and give you their collision from a layer or a tile property.

Input on every device

Named actions bound to keys, gamepad buttons and sticks, and touch buttons, with per-step edges and analog values. Players can rebind.

Rigged characters

A 2D skeleton drawn from cut-out images or vector shapes, with blended poses and a built-in humanoid of 72 poses and ready clips.

Light, sound and music

Soft lights cut out of the dark, a Web Audio sound engine with distance muffling, and music that streams and crossfades — iOS included.

Multiplayer that agrees

An authoritative room for Node, client prediction and reconciliation over deterministic movement, interpolation for everyone else. In tests and over real sockets the server never has to correct a prediction.

Pixel art, as a module

1681-engine/pixel adds pixel-perfect effects on the world's own grid, dithered lighting and bodies that evaporate into their own pixels. Games that don't use it don't ship it.

Made for a real game

Grown out of a shipped online action RPG; its rules come from profiling it on phones. Strict TypeScript, tested, MIT.