The game was first released on August 16th 2021, and since then has been hosted on the Shin Megami Tensei V website. It is going to run on the website until the end of the year, on December 31st, 7PM JST.
The game functions like a lottery, where challengers (random demons from the game) are established by their level, which is randomized, with the highest-level challenger being the "champion," and challengers will need to receive a higher level than them to take their title.
After the user's attempt is over, generally they can try again by posting about it on Twitter (through the respective button on the bottom on the screen), but simply clicking it is enough to unlock the ability to try again. According to the tutorial, the more tweets the user shares, the easier it is to summon more powerful demons.
The pool of demons is based on the revealed demons from the Daily Demon series, and the level that can be received is based around the level of the current champion.
On the main page, the number of victories (successive champions) is listed. There are also various milestones: if the number of successive champions reaches the next milestone, a gift will be rewarded on the noon of the next weekday. For limited physical gifts, winners are presumably randomly picked and contacted via DMs on Twitter, presumably making it necessary to post the aforementioned tweets. However, these rewards can only be shipped within Japan.
|2||15,000||Logo Keychain, Mask, 3 Logo Stickers||10 people||9/29|
|3||25,000||Shin Megami Tensei V original round tumbler.||10 people||-|
|The last mentioned milestone has not been passed.|
- 『真・女神転生V』悪魔コロシアムを公開！, atlus.co.jp (2021.08.16)
- 『真・女神転生V』悪魔コロシアム壁紙プレゼント！, atlus.co.jp (2021.08.18)
真・女神転生Vは11月11日発売, Twitter (@megaten_atlus, September 29, 2021)
|Other||Aogami - Sophia|
Tao Isonokami - Yuzuru Atsuta - Ichiro Dazai - Miyazu Atsuta - Hayao Koshimizu - Sahori Itsukishima - Shohei Yakumo - Nuwa - Gustave
Abdiel - Khonsu - Vasuki - Zeus - Odin
|Tokyo||Jouin Academy - Shinagawa Station - Takanawa Tunnel|
|Da'at||Expanse: Shiba - Hamamatsuchou - Tokyo Tower|
Tree of Knowledge
|Terminology||Nahobino - World of Shadows - Bethel|
|Mechanics||Demon - Turn Press - Moon Phase System - Alignment - Fusion - Race and species - Difficulty|
Skill Potential - Magatsuhi Skills - Essence - Glory - Miracles
Cadaver's Hollow - Miman - Treasure Boxes - Amalgams - Demon Statues - Abscesses
|Lists||Bosses - Skills - Items (Vending machines) - Status Changes - Side Quests - Demons|
|Promotion||Daily Demon - News|
|Other||Demon Colosseum - Merchandise|