this game is different than other tower defence games.in tower defence games you just build a tower or something and watch. in this game you combine gems and other stuff like that
the five hats
1. Kongregate Hat, for Kongregate members
2. Exp. Hat, won in races
3. Propeller hat, won in the Hat Factory
4. Cowboy Hat, appears randomly in races
5.Crown hat, for Moderators only
 "Platform Racing 2"){kind=icon}
 "Scribble 2!"){kind=icon}
 "Scribble!"){kind=icon}
 "GemCraft"){kind=icon}
 "Free Rider 2"){kind=icon}
 "Grid16"){kind=icon}
 "Dino Run"){kind=icon}
 "You Have To Burn The Rope"){kind=icon}