Trigonometry Wars is 71M's entry for the NEO Summer Coding Contest 2006 for PSP Games. Based on the Xbox 360 game Geometry Wars, this is one hell of an addictive game. It's also pretty hard. You have to move your little ship around by firing your thrusters (Left Trigger) and bumping into walls. The Right Trigger is used to shoot, and the analog stick is used to swing your ship to face the direction in which you wanna shoot. The triangle button lets you fire a smart bomb for those times when you're swamped by enemies.

Here are the Hiscore controls :

* Left trigger = Delete letter
* Right trigger = Enter letter
* Cross = Accept name

Thanks to Scott for the tip!