:D Kids these days, eh? Here is a very fun to read walkthrough in the case you get stuck: http://jayisgames.com/archives/2012/12/ubooly_and_friends.php#walkthrough
I like the game, but the really big boards towards the end are sort of annoying. I would have preferred some more difficult puzzles on smaller boards (if that is possible).
Still, easy 5 stars.
It's almost impossible to die even if you're trying after a certain point. I suspect the "temporary invulnerability when one bird in your flock dies" upgrade is overrated.
broax23: you can jump over or run under all the enemies before the boss provided you have enough speed/jump, although once you're able to beat the boss the ammo needed to dispatch the other robots shouldn't be an issue anymore either.
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:D Kids these days, eh? Here is a very fun to read walkthrough in the case you get stuck: http://jayisgames.com/archives/2012/12/ubooly_and_friends.php#walkthrough