Playscii is a powerful, open-source ASCII-based art, animation, and game creation tool. Advanced layer-based tools and import and export options are available through a familiar window system with the appeal of classic DOS development tools like QBasic.
PICO-8 is a Lua based fantasy console for playing and programming tiny games and other computer programs. The app boots to a shell prompt with easy access to scores of game building tools.
LowRes NX is a simulated retro game console which can be programmed in the classic BASIC language. Make your own retro games on a virtual game console. Create sprites, tile maps, sound and music with the included tools.
TIC-80 is a fantasy computer where you can make, play and share tiny games. Comes with built-in tools for development: code, sprites, maps, sound editors and a command line.
WASM-4 is a low-level fantasy game console for building small games with WebAssembly. Game cartridges (ROMs) are small, self-contained .wasm files that can be built with any programming language that compiles to WebAssembly.
Pixel Vision 8 is a platform that standardizes 8-bit fantasy console limitations built on top of an open source C# SDK. Developers can customize these restrictions to match actual legacy hardware or create something new. It is ideal for game jams, prototyping ideas or having fun.