yo, nice game. One thing though, I remember playing a game exactly like this, except with better graphics and more cards. It was a mini-game in I think Might and Magic XIII: Day of the Destroyer, I'm not sure what the game is, but I definitely played it before
 "mini Tower Defence (mTD)"){kind=icon}
 "- Music in Motion -"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 3"){kind=icon}
 "Warlords: Call to Arms"){kind=icon}
 "You Have To Burn The Rope"){kind=icon}
 "Kongai Launch"){kind=icon}
 "The Fancy Pants Adventures"){kind=icon}
 "Defender"){kind=icon}
 "GlowBricks"){kind=icon}
 "Glowsticks"){kind=icon}
 "Castlewars"){kind=icon}