Thanks for the giveaway Sonic All Stars Racing http://www.amazon.com/Sonic-All-Stars-Racing-Transformed-Download/dp/B00AWRPEJI/ref=sr_1_3?s=videogames&ie=UTF8&qid=1362159162&sr=1-3&keywords=sonic+all+stars
It's pretty cool. It def has some flaws. Though I think the pros outweigh the cons. It also has a ton of DLC. (different skill levels, and genres) I'd definitely recommend it.
it's more than 8, but the best I can remember seeing is Amazon currently has it for 15$ and you get a 5$ credit.
http://www.amazon.com/The-Cave-5-Credit-Download/dp/B00ATSB3FO/