A free program for Android, by Rami Sabbagh.
What is it?
LIKO-12 is a fantasy computer that lets you create and share your own tiny retro-looking games and programs. It comes with a fully customizable, DOS-like operating system, called DiskOS. It is based on the open source library called LuaJIT.
What does it do?
Create and play your own retro-looking computer games and programs by running them through the built-in command line editor and export them as disk files that can be easily shared to friends or anyone else.
How does it work?
You can create your own retro-looking computer by specifying the RAM, CPU, GPU, map, and drive sizes. You can choose the operating system you want, as well as the command line program and the editor.
