Boris Iwanski (formerly known as Tarin) is a long-term member of the Doom community and author of a variety of PWADs, including the Forgotten Base series, a number of Freedoom resources and several early Skulltag levels. He is also the owner and webmaster of the WADs in Progress website. He has collaborated to Doom Builder 2.
- Forgotten Base Special Edition aka fbase1-4 ( )
- The Joy of Mapping #4 ( )
- E3M5: The Unbroken Pathway
- The Joy of Mapping #5 (
- E2M3: A Pity Place
- The Joy of Mapping #6: JOY ETERNAL (
- E4M7: Slave to Sin