Originally Posted by Drip

They all spawned SGs for me, but only the ?-5 one was event specific. However, I bet it's random, and that each may spawn an event specific SG. Though ?-8 spawns plenty of papers, so I don't think it's really necessary for that one. But for the people who can't clear all event maps yet, ?-5 is definitely a nice one to farm and keep up with the high level crowd (somewhat).

?-5 spawns a "Beginner" Event SG that had 30 tickets, guaranteed. ?-8 spawns an Advanced Event SG with 90. I'd guess ?-6 and ?-7 spawn an Intermediate that's somewhere in the middle but they didn't for me.

?-8 was shockingly simple. Only one RNG node to worry about.