Too much 3D, switching to 2D

I’ve been toying around with 3D graphics and JBullet, coming up with this rotating colored ball universe thing:

plastic_ball_universe

However, turning it into the game I planned to (space trading) seems like too much effort for the time left, and my brain objects to more 3D math at the moment.

So I’m switching to a 2D pixel-graphics fantasy-themed trading game instead.