GWN recently did an in-depth of review of Super Stardust HD, and dubbed it the "must-own PSN title of the year"!
"Super Stardust HD has everything a good arcade game needs and more. Fun to play, co-op, online leaderboards, excellent graphics and enough playtime to make it worth the money spent on it. At $9.99, it is worth every penny.
Like any good arcade game, there is no story. There is simply an objective, in this case to keep the planet clear of asteroids and baddies. Controls are exactly like GeoWars, with a few additions. L1 & R1 changes the type of gun in use, L2 activates what I like to call "ramming speed" and R2 detonates a bomb."