As already 4 years on PokerStars no more DON SNG
Acronym for Double-Or-Nothing type of Sit-n-Go tournament. The tounament ends once half the playing field is left, awarding the surviving players double their buy-in.
Fifty50s differ from Double or Nothings in their payout structure. Only half of the prize pool is distributed evenly amongst the top half of finishers. The other half is distributed based on chip count, with each chip having an equal value.
This difference means that players always have some incentive to care about the size of their chip stack, whereas in Double or Nothings this was not always the case.
Fifty50s only play well for multi-tabling, to get the vip-status ( SN or SNE) on PokerStars. But Fifty50s are much less profitable than regular SNG...