Meet ct.js,your new 2D game engine

ct.js makes learning programming fun and game development easy with its visual tools, good docs and flexible, modular library, and several coding language options.

It is free, open-source, and loved by hobbyists, professionals, teachers, and their students.

Download v5.1.0

Three programming languages. Same powers. Yours to choose.

JavaScript & TypeScript

JavaScript is the language of the web, and optional TypeScript features provide rich coding tools.

// Event for a collision with a bullet
var damage = 5;
// 15% crit chance!
if (random.chance(15, 100)) {
    damage *= 2;
}
this.hp -= damage;

// Destroy the projectile
other.kill = true;

if (this.hp <= 0) {
    this.kill = true;
}

CoffeeScript

A python-like language with a concise and beginner-friendly syntax.

# Event for collision with a bullet
damage = 5

# 15% crit chance!
if random.chance 15, 100
    damage *= 2

@hp -= damage

# Destroy the projectile
other.kill = true

if @hp <= 0
    @kill = true

Catnip

A visual programming language made specially for ct.js that works similarly to Scratch, but better.

Set

damage

value

random chance

Set

damage

value

damage

Decrease

damage

Destroy the projectile

With copy

other

Destroy this copy

≤

Destroy this copy

Create games of any genre

Shooters, arcades, adventures, survivals, puzzles, visual novels — you name it!

Play

Ill Fated

A vampire-survivor-esque shooter where your character only grows weaker through time. Fend off endless monsters and see how many curses you can get before you succumb to the foes.

Play

Vacation of Fusion

A light-hearted island-building game where you mix elements to create new tiles. Features creative mode, cartoony graphics, and a selfie mode!

Play

Welcome to the VOID

A story about rebooting the universe. Swim through the endless dark cosmos, engage in space combat, land on planets for expedition missions and explore the lost technologies.

Submit your own!