Originally was thinking about doing it through Discord, but after the recent age-verification fiasco and “real money gaming” (gambling) ads, I’m looking for alternatives.
Link to the engine’s repository: https://codeberg.org/ZILtoid1991/pixelperfectengine
Pick a server, create your space (they are literally called spaces) and create your rooms in there, done.
If the rooms are public, consider adding a moderation bot to be better equiped against spam too. Selfhosting Draupnir or Meowlnir is doable, but you can also employ https://asgard.chat/