Awesome game! The only issue I noticed was that the colour of the penguin's chest is the same colour as the background during the day - so it appears to 'blend in' with the background during the day.

Other than that mechanically speaking, I think the game would be a bit more engaging if as time went on the frequency of obstacles spawning increased. That way as time goes on there's less and less distance between each obstacle making it even harder.

But I really enjoyed playing your game, excellent work. Kudos on a great entry!