DNA

Guide your molecular machine through the microscopic world of DNA. Gather the DNA fragments and drop into the sequencer to repair DNA molecules. Hold the FIRE button for rapid fire and destroy the free radicals. Pure arcade action. Control keys: Arrows and Z to fire; or WASD and M to fire.

DNA was designed by Brent Silby in 2004. It was coded in Javascript, which was unusual at the time, given that most browser games in that era were written in Flash.