Xatax
1994· Pixel Painters· Shooter
Premise via IGDB
In the 25th century humanity was attacked by a mysterious alien force known as the Xatax. The aliens began to attack the planets of the galactic Alliance, consuming the life force of their inhabitants and growing stronger after each victory...
Xatax is a side-scrolling shooter in which the player must defend the remains of the Alliance's guilds against the titular aliens. This is accomplished in a traditional shoot-em-up fashion, fighting waves of alien ships and stationary turrets. The player-controlled ship can become stronger by collecting power capsules dropped by defeated enemies.
The game features three different worlds, of which the shareware version only contains the first.