Trig Wars for PSP (Geometry Wars Clone). Lumines Live!
God Save The Queen! But homebrew’ll save the PSP. There is nice Geometry Wars clone (sans Evolution) out there called, ready, get this: Trigonometry Wars. Ok, ok, we know the name lacked creativity but give the developer some major credit for figuring out a control scheme without dual-analog control sticks. If you are a Sony fanboy and have been missing out on the Xbox Live Geometry Wars action, give Trigonemtry Wars a try. It isn’t the best graphics we know, but beleve us when we say the graphics are not what made Geometry Wars popular (”Look! Its a flying decahedron!”). We’re cool with Trig Wars, but if anybody tries making a Calculus Wars or a Grammar Wars, we’ll offially call you LAME.
Since we’re on the 360 to PSP porting note, let’s also mention that Lumines Live has finally received a release date for Xbox Live. (September 6th for those too lazy to click the links below).
Trigonometry Wars Official Site
Kotaku: Trigonometry Wars: Geometry Wars For Your PSP!
Kotaku: Lumines Live Dated

