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Vector Graphics API

Full access to a CanvasRenderingContext2D with WebAssembly** performance.

C# Playground

Full support for .NET 10 and C# 14, access the full power of C# in the browser. Features full LSP with autocomplete and linting.

Share via URL

Build and export your AssemblyScript projects to a public codetoy.dev URL

Discord Activities

Full support for singleplayer Discord Activities with Share URL. Just pop the URL into your Discord app and it will just work by default.

Make a Discord Activity!

See What's Being Built

Explore games and projects from the Codetoy community.

Block Terrain 2.5D

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Wulfenstein

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MINESLOP

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UNDERGROUND.io

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Dungeon Gun

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Slither Game

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Shooter (AssemblyScript)

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Max's Car Game thingy

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Max's tree thingy

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*Moving* Procedural Tree (it's alive!!!)

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Procedural Tree Complete

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Recursive Pine Tree

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New C# Project

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Spiders

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Checkers

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Shooter Game

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test1

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Asteroids

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Snake

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SDF Raymarcher

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Snake

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Broken Slime Molds

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Basketball game

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Flappy Bird

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Click to Draw

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**What is WebAssembly?

WebAssembly is a binary instruction format that runs at near-native speeds in your browser. Unlike JavaScript, it was built for performance-critical tasks like games, rendering, physics simulations, and AI pathfinding.

  • ✓

    Works anywhere you do

    As long as you have a browser, you can execute WebAssembly

  • ✓

    Native Speed

    Runs 2-8x faster than JavaScript for compute-intensive operations

  • ✓

    File Sizes

    Efficient memory management with 10-20% smaller file sizes and faster loading

WebAssembly
95/100
JavaScript
35/100
Setup Time
5m
File Size
40% smaller