Merge Sky - idle plane games

This is a decompression aircraft combination and magic tower defense game, combining the same aircraft into a new aircraft, and then fly your beloved aircraft into space, to eliminate virus invasion, get a gold coin reward to enhance firepower, or expand territory to build more aircraft.
Game features:
Simple and interesting play, unique scenes of space
Many planes are waiting for you to collect them
Flying into space in a beloved plane
Many different weapons, many checkpoints need you to challenge