For the time, this game is revolutionary. Coming out a few months before Wolfenstein 3D, this is the game that truly pioneered fully 3d gameplay. I have a ton of respect for Bluesky/Looking Glass and what they were able to accomplish here. Unfortunately, the controls have not aged well. I was unable to find a mod that adds newer control schemes, so I eventually gave up on this game for time reasons. However, what I did play still impressed me compared to the rest of the playing field at the time.