As of today, you can purchase Codemasters' selection of four-letter racers on Steam at significantly reduced prices. DiRT 2 is easily the best of the group, and I absolutely recommend you download it, but the others are so cheap that it might be worth it to go all-in.

DiRT 2 ($9.99)

($9.99) DiRT ($2.50)

($2.50) Fuel ($3.74)

($3.74) Grid ($6.24)

($6.24) ToCa Race Driver 3 ($2.49)

Alternatively, you can get all five titles as a bundle for $17.50. Either way, you'll come out of this bargain with a smile on your face. Allow me to be the voice of reason, just this once, and say you shouldn't buy anything you don't actually intend to play. I know, it's hard to resist.