I had actually never played Zero Tolerance until recently and was having a blast with it! The sound effects of your guns sounds so satisfying and add a ton of weight when you’re killing the enemy and the music, while minimal, will get stuck in your head for awhile. My only complaint is the small window to see and the HUD taking up almost everything, but you get used to it after awhile. It’s interesting to see a case like this, with the Genesis logo band very small in comparison to what you see of other covers. There was a sequel, titled “Beyond Zero Tolerance”, but was canceled, although... the owner released it online years later for everyone to play. If you love DOOM or the original Wolfenstein, you’ll get some enjoyment with this.