Very cool idea. I had fun playing. I also got stuck on the level with the 3 raised blocks. I think the controls might be better if they were from the goose's perspective.
The goose looks great :D
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To be honest I think I probrably should have removed that level, simply because of the fact that my chacracter controller is not well suited to it as it seemed incredibly slippery and was easy to fall off. However, I didn't have time to rework the character controller and couldn't think of any ideas to put in place so I left it in.