I have a feeling there's some bad Wolfenstiend 3D engine clone that people are just churning out terrible games with. Here are some of the games:   CASTLE WEREWOLF 3D http://store.steampowered.com/app/586520/Castle_Werewolf_3D/ Clearly not Castle Wolfenstien 3D, but it has enough blue bricks and soldiers to make you think otherwise. I played it, the game is slow, clunky, cumbersome, but then that will be a trend in the games I'm about to talk about. The real problem with this particular game is the draw distance is just shrouded in darkness. So even looking at something far enough away its just pitch black. Another issue is lack of a map when you're working your way through a labyrinth that is all one texture.   MERGER 3D http://store.steampowered.com/app/527750/Merger_3D/ Seems like the same engine, but there was more work put into the game so its not a rip-off of Wolfenstien 3D. It plays better, your character is more spry and there's more action. The problem is there are enemies from everywhere so you don't know where the action is coming from. Melee creatures spawn in and trap you against walls. Is there a gunman with a sniper's aim shooting you through two walls of trees? I just don't know.   There are one or two others that use whatever this abomination of an engine is. Both games have no achievements and they're DOS based which is a rarity now. There is no map in either game, death sends you back to the title screen, so if you didn't save you're going to have a tough time getting anywhere in either one.   Games are getting worse than they were 20+ years ago.