There are many health items in Doom. But none of them can heal you over time. I know this has been done a lot of times, but this is RegenPacks.  From best to worst: The Small regeneration pack:  Time: One Minute|Health: 3 points per second. The Regeneration Pack:  Time: 2 Minutes|Health: 6 points per second. The Regeneration sphere:  Time: One Level|Health: 10 points per second. RegenPacks.zip