So, I bought the game used a while ago, and I see there's an achievement for "discovering" Geometry Wars? As I got it used, does this mean if I want the achievement I need to buy the games, or is there a download function once I get in-game?

Thanks.

Edit: Just found out, so please disregard.

The two are in the garages Keep buying cars to open new garages and search for them

You do NOT have to buy new cars and search for these arcade games! Simply go into your current garage and select the option to walk around. You'll see in the back of the garage two arcade machines sitting side by side. One is Geometry Wars, the other GW Evolved. Simply play one of the games, you don't have to complete it or anything simply play it, and quit out. Shortly after you will be back at the PGR main screen, simply repeat the walk around option in the garage, and this time play the other game, quit out, back to the main menu, and ba dink, achievement unlocked!!