VR-ARRIVAL
Serious Sam 3 BFE supports 16 players in co op and PvP, but it’s very expensive and the menus aren’t the most intuitive for newbies. Will probably require some tweaking in the options to make sure people don’t get motion sick too since it’s quite fast paced.
(I don’t have it in my arcade, only played it for myself)
Also The Forest supports 8 players but it’s probably far too difficult and slow paced for an arcade.
Rush supports 12 players I think, but potential for motion sickness in this one.
Sports Bar VR is 8 players, haven’t tried it myself. Expensive ppm on Springboard at 0.10c
Battlewake is 10 player PvP though I prefer Furious Seas since it has simpler controls and less arcadey