Miasma is a mammoth of a single level wad. The limey towers of the level are intricate and its complex is detailed with there being several interconnected corridors with windows and paths between them to make the place feel alive. There was a moment where I was walking down a corridor and I didn't realize that knights were tossing in fireballs behind me.

There's a non-linear nature to the map, too. There are plenty of optional areas and I would recommend tracking down a BFG before tackling the final tower. I didn't so that part was really hard for me, even with the Supercharge mod.

I've played this wad a few times but this is the first time I finished it. It's probably in my top 10 for recommended single-level wads. Get lost in its neon structures and blistering fights.