I started this Sunday and although I have quite some experience contributing to (closed source) projects, this is my first application that I made from scratch that is not data analysis.
It is still super early days, I am on holiday and started work on this while travelling here last weekend. Just finished the first working version with the minimal feature set I wanted.
Elite 2Deep is a 2D space shooter local multiplayer game with Newtonian* mechanics. You can yaw, thrust forward, backward, and strafe. Keyboard controls only and only 2 players for now. Expanding to more players should be simple in the current code structure, depending on how simple it is to get game controller inputs.
You need to hold the Fire button for a second before you fire your rail guns.
For those familiar with Elite: Dangerous, this is a purely Flight Assist Off game.
I just added some minimal setup instructions in the wiki page.
*Actually I already set it up for a speed limit like Elite Dangerous has but the max speed is set very high still.