Uridium is a challenging action & adventure game where your home solar system of 15 planets has been attacked by a horde of Super Dreadnoughts. These space craft wish to harvest the universe's minerals for their own use, and it's up to you to stop them.
You'll pilot your craft through some of the hardest levels ever created, shooting down enemy spacecraft and ground weapons while avoiding indestructible hazards. The goal is to defeat a sufficient number of enemies, allowing you to land on the Dreadnought and destroy its reactor.
The gameplay in Uridium is unique, with movement restricted to left-to-right or right-to-left depending on the current targets, similar to Defender. This adds a new level of strategy to the classic shoot 'em up genre.