D.XXI in the game?

[1.JaVA_Platypus]

This proves it! Oleg secretly introduced the Fokker D.XXI in the game

Not really tough

A squadmember made some skins for the Ki-27 to make it look like a D.XXI. It is rather a nice aircraft to fly. Impossible to stall. The armament is enough to down 109's (as seen) and even TB-3's when used properly.