>>277147074
So in rec room, you can in fact increase the player count on the base games by cloning them and modifying the room settings, but I scuffed my first version of it; For future reference, you need to edit both the _subroom_ settings under the room settings to change the max player count (max 20)
https://rec-room.fandom.com/wiki/Watch_Menu#Subrooms
and also find the game rules chip in the room and change the team size (10v10)
https://rec-room.fandom.com/wiki/Game_Rules_Chip

Some games like bowling have additional game logic that needs more spawns. I think the laser tag and probably ctf mode work fine out of the box though.