/vr/ - Retro Games

There was an odd little game I remember playing as a kid. I don't remember much about it though.
I think it had you pressing buttons to the rhythm, to get over obstacles. The game placed the player on a simple white line, and you had to dodge spikes, jump over stuff, and I remember one move in particular where your legs grew. Also, I think the protagonist may have had large ears.
Can someone help me, please?
Thnx