Diablo III: Reaper of Souls

Diablo 3 servers are being wonky thanks to this +100% EXP buff. Strongly recommended NOT leaving your current game session if you can help it, otherwise you may be playing the "waiting game" for a while.

EDIT:

[UPCOMING HOTFIXES]

All class set items will now only drop in Torment I or above.*
Reduced the amount of experience granted by monsters with lower than average health pools.*

RIP CotA. Seems like blizzard did internal testing and CotA was beating Bounties and Adventure Mode @ level 70.
People saying RA and/or Core are the only areas not nerfed now since the upcoming hotfix will hit Cath 4.