Pro-Han Lin has released the latest version of the asteroid blasting game Ceres for PSP. Version 1.3 will run on Firmware 1.0 and 1.5 and features IR 2-player capability. The game author also challenges players to see if they can get past Mission 21 to see an additional challenge - wormholes - thrown in.
1.3: Aug 20, 2006: Zoom in and out of stars
Ion thrust fragments
Wormholes in Mission 21+
Moveable radar HUD