If you had an N64 back in the day, it was the only choice for a doomlike experience. Doom64, with its darker creepier design and its isolationalism ambient soundtrack, delivered. I remember sitting playing at night in my bachelor apartment and having to stop because it was making me feel sick with tension. I had previously played Doom I on a 386 with an internal speaker (never managed to finish as one level was unplayable on that machine unless the screen was reduced to the size a postage stamp). For me it was my first fully playable doom experience so I have a soft spot for it. What I found most irritating is how a lot of ambush traps warped in enemies instead of being hidden behind walls.