For what it accomplishes, this is groundbreaking! I'll say that thee Wolfenstein version is more fun to play on a stock C64, only because it gets more frames per second, but with turbo enabled I'm really enjoying Square Doom a lot! Kinda wished it had the weapon bobbing, but especially a faster walking speed or a Shift-to-Run kind of speed, and that timed secrets would make usage of these speedier traversals. But I understand that the slower walking speed is probably necessary so people on a stock C64 can play it. But the levels are fun to explore like this! It translated to being squares very nicely indeed!