Holomatrix

Use Arrow Keys to move; WASD to fire in all directions.  X001 is a hologram. It exists in a holographic world.  X001 must destroy the holographic viral entities. Collect their holochips to defeat the threat.

Holomatrix was designed by Brent Silby in 2003. It was coded in Javascript, which was unusual at the time, given that most browser games in that era were written in Flash.