Jet Fighter Neon

Jet Fighter Neon is a nostalgic take on jet based shoot-em-up, where you don't really need skill to win. In the Earn Gems mode, fight an unending flow of enemies with the occasional break for a mini-boss. Earn gems while you do that, then spend those gems to purchase upgrades to help you go longer. When you feel ready, take on the boss and see if you can survive him. Beat the boss with fewer upgrades installed, and without missing, and you just might get a higher score.