DOOM 64 is often assumed to be a simple port such as, DOOM 32X, DOOM jaguar and DOOM PS1. DOOM 64 is a third entry in the series, taking place after DOOM 2 and before DOOM 2016, a more horror focused entry like the other "DOOM 3" without a rock soundtrack instead, it has a atmospheric soundtrack, with all new levels and its own new enemies, moving into a more power age the enemies are still pre-rendered but this time as computer models and not clay models using higher quality textures and sprites, the game also uses colored lighting, unfortunately this is mostly the end of the praise. the movement feels a lot slower than DOOM 1 & 2, the sound design is far more muffled and less punchy, due to the limited size of the game means a lot of animation frames are missing so no more cocking your shotgun or reloading your SSG. the final boss is overly difficult if you haven't gone for all 3 demon keys but if you do it takes a lot longer. i think the game needed more time to cook and be polished but still a wonderful doom game