There are actually only 15 minigames. (Ten standard, five unlockable.)

CHEATS

rope - RC Tug Of War
pullback - To The Edge
speedy - Speed Counting
dragster - Break Or Break
buzzer - Spot The RC

get rough - Changes poster.
cool rc - Changes poster.
sandy - Changes poster.
dirt crusher - Changes poster.
red beast - Changes poster.

street - Plays video on TV.