RF Online 4.55, level 80, no gear in the cash shop and Chip War three times a day.
4.55 · Cap 80 · x10 EXP
N.I.N.J.A (Nothing Incredibly New Just Assassins) is a 4.55 server in early access, with a level 80 cap and x10 EXP and drops (x30 animus, x5 mining); premium doubles these and new accounts get 7 days free.
Its cash shop sells no weapons or armour, Chip War runs three times a day, and Dark Hole rewards are doubled.