I remember Space Invaders, it's an awesome game. But i have no idea about Namco and Galaga. Are there for free download on net? I'd be glad to play it :D
And by the way, don't you play games on PS3 or PC? I mean do you have a graphics card in your computer? I play Battlefield 2, Battlefield 3, Crysis 2, GTA 4 , Saint Rows 3, MOHA , etc... and so on !