Really tight and ahead of its time
UN Squadron is one of the best 2D side-scrolling shoot'em ups ever made, and it was made so long ago. The game felt so pretty when it first came out, as well as having amazing controls and a really good balance overall. You can select from a few different characters and buy different fighters (planes) as you progress throughout the campaing. A really clever game that might be the best of it's genre. A underrated classic.