The game is one of the oldest PC games still in active development today, originating as an MS-DOS game for the original IBM PC.

The 40th-anniversary site has a detailed history of how the game was written as a tech demo for the now-defunct Imaginet networking system.

There is also a video interview with its original authors."The game involves piloting a Sopwith biplane, attempting to bomb enemy buildings while avoiding fire from enemy planes and various other obstacles," reads the Wiki page.

 "Sopwith uses four-color CGA graphics, and music and sound effects are done using the PC speaker. A sequel with the same name, but often referred to as Sopwith 2, was released in 1985."

You can play the game on your browser here.