With such as amazing project like Textual it was matter of time when someone would make game with it! So here is my first attempt to start slowly and check possibilities.
With Python already installed get dependecies:
pip3 install -r requirements.txtand run with:
python3 main.py
This game works in terminal so the render possibilities are limited by your setup. If it looks strange or even ugly be sure that it support color range, and if there are performance issues it also may be caused by badly optimized emulator.