Urban bird combat is a rough affair, so protect your turf! The rules are simple: Two birds collide and the biggest converts the other, so pump up your birds! But be careful not to hit other birds as you are inhaling, or your bird will lose its air. Pump Up the Birds,bird game,puzzle game,strategy game,bird combat,battle royale,convert birds,gameplay guide,mobile game,casual game,addictive game,puzzle,strategy,birds,air,turf,territory,game,touch controls