CTFs as you need them
Code for Cicero, an AI agent that plays the game of Diplomacy
An in-progress 2D tactical RPG
Arianne is an engine to develop multiplayer online games like Stendhal
Air traffic control tower and radar simulator (solo + multi-player)
A tool to help unlock the Hydra in Inscryption
Small cube game
A Pygame RPG
Open Source Breakout Clone