Mine are majority from 1x1 RP's that ended up becoming insanely successful.

I believe in terms of post count the ones I were in were at 1st, 3rd, 5th, 8th, 12th place etc.
Combined a few successful group RP's at well, two specifically being a male boarding school for mutants/monsters/people with super powers, and one RP that was like SAW with a 'Game'master but it was a group of teenagers, and instead of completing one game they were trapped/locked in his building where endless games were played on them until one day they broke out (This RP actually ended up seeing a proper ending :P).