Bitsy is described as 'little editor for little games or worlds. The goal is to make it easy to make games where you can walk around and talk to people and be somewhere' and is a Game Development Tool in the Development category. There are more than 10 alternatives to Bitsy, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Self-Hosted solutions. The best alternative is Playscii, which is both free and Open Source. Other great sites and apps similar to Bitsy are TIC-80 (Free, Open Source), PICO-8 (Paid), Voxatron (Paid) and quadplay (Free, Open Source).
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.
Voxatron is a fantasy console system where games are made out of voxels and made available to the system as traditional cartridges that can be made from scratch through a built-in designer or remixed from other shared creations.
The quadplay fantasy console bundles an emulator and advanced development tools including an adept IDE and tools for use with other IDEs like VS Code, Vim and Emacs. FEATURES - 60 fps @ 384 x 224 pixels = 12:7 aspect ˜ 16:9.
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.