In the soul sphere’s case, players literally get to see the prize, but they have to figure out how to get it themselves. Another cool thing Doom does is surprise.

A software engineer has ported Doom to a playable gif hosted at a popular fanfiction archive, and it works, though you probably aren't going to be slaying any Cyberdemons with it anytime soon.

In the soul sphere's case, players literally get to see the prize, but they have to figure out how to get it themselves. Another cool thing Doom does is surprise.