http://www.incitti.com/Blitz/
Lotsa games, but it's the top one - "Grid Wars" - you want. It's a complete rip off of Geometry Wars and totally rules - it'll waste far too much time if you're not careful, it's one of those "one more go" games.
Nicely there's PC and Mac(!) versions. You can play it without a dual analogue controller, but I don't know how easy it'll be.
My top score atm is 900,000 on easy.
