Titanium and Arctic are two projects of mine and my goal was to implement an intepreted minimalistic programming language. These repos probably won't be updated from now on, mainly due to the lack of time and motivation to keep working on those projects. However, if you want to try them all, please read their docs and download their interpreters and try writing a few simple programs using them. If you want to clone any of those projects and keep working on them or even use them as a basis for your own programming language, feel free to do so. A huge hug from @AndrewNation!
1-Download it
2-Make sure Node.JS and the TypeScript compiller are installed
3-Run tsc titanium.ts
4-Run node titanium.js