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ct.js has a "Core" library that provides basic drawing functions, room and asset management, and mouse interactions. Any other functions are added to projects as "catmods", or simply modules. These modules can be enabled or disabled in one click, and can inject their code in different game loop stages, e.g. after drawing all the objects, leaving a room, or when a new object is created. See More
v1.3 brings a particle system editor, which displays a preview sprite for proper attachment of emitter to visual elements, and allows combining more than one emitter with different particles into one effect. With these, even the creation of complex, multi-step effects becomes easy. The editor comes with dozens ready-made textures for faster prototyping. See More
Learn programming by quickly creating and modding retro arcade games with Blocks, JavaScript and Python in the online MakeCode editor, the offline app or your own local pxt-arcade server. Play your own or others' games in the online web simulator, or download and play on various handheld or SBC devices. Save your projects for free in the cloud or on GitHub. Open source and free, great community. See More