PX8 is described as 'Open-source, Rust based fantasy console'. There are more than 10 alternatives to PX8 for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Self-Hosted solutions. The best alternative is TIC-80, which is both free and Open Source. Other great apps like PX8 are PICO-8 (Paid), Voxatron (Paid), Bitsy (Free) and quadplay (Free, Open Source).
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.
PQ93 is a fantasy console for making small games. It is available to download and run natively, but you can play the demo in-browser above. Included in PQ93 is a command shell and editors for code, sprites, sound effects, music patterns, and maps.