Did you do a full factory reset? Backup your Pad via itunes , than hold sleep and standby button while still connected to itunes via cable, hold it to u see this picture:
Than itunes will tell you it has found an divice in recovery mode.
Set it up as a new device, dont use backup. After everything is done load the game and try. If it works, reset ur phone from backup and try the game again. If it doesnt work there is an error in the backup… If it doesnt work nor on fresh device or backup…than you might have an broken accelerometer…
Cheers