The following games can be played head-to-head if you own two controllers:
Blaze and the Monster Machines
LeapFrog Kart Racing: Supercharged!
Letter Factory Adventures
Nickelodeon Dora and Friends
Roly Poly World
T-Rex Rush: Egg Spelling Collection Crew
The following games have a turn-based multi-player option:
Jake & the Neverland Pirates
Mr Pencil Twist and Shape
Dance & Learn is a motion based multi-player game.