1945 Air Force is a vertical shoot-'em-up in the classic arcade mould: your plane flies up the screen, waves of enemy aircraft come down at it, and the space between the bullets is where you live. Between missions you spend what you earned upgrading your plane's weapons, armour and wingmen.
The upgrade layer is what separates it from the 1980s originals — a mission that's impossible now becomes routine after a couple of upgrades, so progress never stalls completely.
Learn the pattern rather than trading damage. Each boss cycles through a set of attacks; stay low, weave through the gaps and only push forward during the pauses between patterns.
Yes — the game is balanced around them. A mission that seems impossible usually becomes manageable after one or two firepower upgrades.
Yes — drag the plane with a finger. It runs in any browser with nothing to install.