This is a port of the excellent arcade game Chromium B.S.U. for the PSP.

UPDATE: v.05 - This new version also allows you to suspend/resume the PSP without crashing the game
Instructions:
Download: Chromium-PSP-0.5.zip
Unzip and install in your PSP firmware 1.50 Game folder.
Controls:
* Digital pad: move in the menu.
* Analog pad: move the ship.
* L button (twice): self destruct (useful to save ammunitions).
* Start: switch to/from menu.
* Select: pause the game.
* Any other button: fire.
Known issues:
* Some graphic effects are disabled in the menu.
* You may experience some speed variation during the game.
via royale