With the public release of the Unreal 4 Engine and 10 years since the last good Unreal Tournament, I propose a challenge:
Build a classic arena shooter reminiscent of Unteal Turnament 2004.
Implement Death Match game mode with one map, one weapon and one character. Bonus points for implementing the exact UT2004 movement.
Choose your own unique theme and look and as far as possible integrate your own assets.
You should build a complete game, that is a packaged executable with menus and all the expected usability. It should look and feel like a full game, albeit with limited level set and gameplay. Bonus points for building an options screen Total Biscuit would be proud of.
You have time until the end of June.
With the release of the Unreal Engine 4 and their tally awesome licensing terms there is no reason why not try out this engine. (I am only sad that they did not bring it out earlier, since I invested much time in building my own.)