DreamHack Open Cluj-Napoca 2015 was the seventh Counter-Strike: Global Offensive Major Championship that was held from October 28 – November 1, 2015 at the Sala Polivalentă in Cluj-Napoca, Romania. It was organized by DreamHack with help from Valve and the Professional Gamers League. The tournament had a total prize pool of US$250,000.

Eight teams were featured in the playoffs. Fnatic, G2 Esports, Luminosity Gaming, Natus Vincere, Ninjas in Pyjamas, Team EnVyUs, Team SoloMid, and Virtus.pro – all Legends from the last major – were once again Legends as no Challenger took their spots. Team EnVyUs, which defeated Fnatic and G2 Esports, was the winner of the event, defeating Natus Vincere, which defeated Luminosity Gaming and Ninjas in Pyjamas, in the finals, 2–0. This came after Team EnVyUs placed second at the previous major, including a game in which Fnatic came back from a large deficit in the first game of grand finals.^[1][2]

The top eight teams from ESL One Cologne 2015 ("Legends") received direct invitations to Cluj-Napoca. This was the first Major to fill the other eight Major spots from a single Major qualifier, instead of directly from various regional qualifiers. For the Cluj-Napoca Major cycle, the regional qualifiers sent teams to DreamHack Open Stockholm 2015, where they faced off against the bottom eight teams from Cologne 2015. The top eight teams from DreamHack Open Stockholm 2015 then advanced to the Major as the "Challengers"

Teams were split up into four groups, and all group matches were best-of-ones with the exception of the final decider match. The highest seed would play the lowest seed in each group and the second and third seeds would play against each other. The winner of those two matches would play each other to determine which team moved on to the playoff stage, while the losers of the first round of matches also played. The loser of the lower match was then eliminated from the tournament. With one team advanced and one eliminated, the two remaining teams would play a best-of-three elimination match for the second playoff spot. This format is known as the GSL format, named for the Global StarCraft II League.^[3]

The playoffs bracket consisted of eight teams, two from each group. All of these matches were best-of-three, single elimination. Teams advanced in the bracket until a winner was decided.

Hosts

• Paul "ReDeYe" Chaloner
• Richard Lewis

Interviewers

• Pala "Mantrousse" Gilroy Sen
• Scott "SirScoots" Smith

Analysts

• Robin "Fifflaren" Johansson
• Joona "natu" Leppänen
• Jason "moses" O'Toole
• Duncan "Thorin " Shields

Commentators

• James Bardolph
• Anders Blume
• Henry "HenryG" Greer
• Daniel "ddk" Kapadia
• Auguste "Semmler" Massonnat
• Matthew "Sadokist" Trivett