I was looking forward to playing this since I saw the thumbnail. It was cool. I definitely wish O got more time to shine (like hills and stuff) because he was just really fun to control. And of course, M is as useless as the red bird in angry birds. The level design was great, and the visuals too especially. It was well paced too, not too long to overuse and not too short to underutilize the mechanics. Great entry!
And I'd appreciate if you'd give mine a try too!