Mark Tullius

Brightside
   0.5. Before Brightside: Mandy (2016)
   1. Brightside (2012)
   2. Beyond Brightside (2020)

25 Perfect Days
   1. 25 Perfect Days (2013)
   2. 5 More Perfect Days (2014)

Tales of the Blessed and Broken
   1. Ain't No Messiah (2019)

Try Not to Die: An Interactive Adventure
   1. Try Not to Die: At Grandma's House (2013) (with Anthony Szpak)
   2. Try Not to Die: In Brightside (2020) (with Dawna Gonzales)
   3. Try Not to Die: In the Pandemic (2020) (with John Palisano)
   4. Try Not to Die: In the Wizard's Tower (2021) (with Michael Sage Ricci)
   5. Try Not to Die: In the Wild West (2023) (with John Palisano)
   6. Try Not to Die: At Ghostland (2023) (with P W Feutz and Duncan Ralston)
   7. Try Not to Die: At Dethfest (2023) (with P W Feutz and Glenn Hedden)
   8. Try Not to Die: Back at Grandma's House (2023) (with P W Feutz)
   10. Try Not to Die: In a Dark Fairy Tale (2024) (with Evan Baughfman)
   15. Try Not to Die: Escaping the Cult (2025) (with Angel Van Atta)
   16. Try Not to Die in Brownsville (2025) (with Jay Bower)
   Try Not to Die: Super High (2025) (with Steve Montgomery)
     aka Try Not to Die: Super High: An Interactive Adventure

Dethfest Confessions: The Devil's Playlist
   Dethfest Confessions: The Devil's Playlist (2023) (with P W Feutz and Lindsey Smith)