Beer Pong HD (free) - It's a bit like skee-ball but with booze! Lots of customization options and it's totally free, too.
Chord Circle V2 ($2.73) – A circular piano. Root notes are color coded. Good for learning music or composing.
Gemz ($0.99) – Place three, four or five gems in a row and get prize points. Avoid stones and bombs!
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