I recently heard about Doom Infinite, a mod for the granddaddy of FPS games that uses its assets and the GZDoom engine to remix the classic maps and enemies to make an compelling roguelite.

It uses a Risk of Rain like timer for each map: the longer you’re playing, the more monsters spawn in and the better item drops you’ll see. The map set is also tailored to get the player to where they can rip through them quickly, but with random elements that change it up a bit. When a map is complete , the player will return to the hub world to get another power-up and (at their option) explore to hopefully find some more upgrades.

It also implements a random gun system that reminds me a bit of Borderlands with different ammo effects, secondary fire, and attributes that makes the player weigh their options.

The enemies that spawn in also have different special effects like being tiny or replenishing health.

It’s a whole lot of fun; it makes Doom feel so fresh, and is surprisingly easy to “read” the screen quickly to determine what threats are on-screen. If you’ve got the .wad files, it’s a pretty simple installation. Give it a try!