The Team17 Softography Says...
"Your task to penetrate deep into the planet Ryxx core, destroy the aliens base and escape with your ship intact.
Featuring Power-ups to enhance your 3 different crafts, which have individual abilities and disabilities to help and hinder your game."
At first it's hard to see the changes that have been made from the original version of the game. But they are there, you just have to look for them. This is, in theory, an improvement. In practice, it's hard to tell at times, but it's still as hard and as addictive!
Project X Special Edition '93, Project X Revised Edition