Following The International 2015, a number of Dota 2 top free agents came together to form a new team. Former Fnatic.EU teammates Johan "N0tail" Sundstein and Tal "Fly" Aizik reunited under the (monkey) Business banner. The rest of the roster was fleshed out by adding Fly’s former Complexity Gaming teammate David "MoonMeander" Tan, as well as young journeyman Andreas Franck "Cr1t-" Nielsen and hot up-and-comer Amer "Miracle-" Al-Barkawi.
The team quickly established itself as a force by placing in the top four at the MLG World Finals. This was followed by a rebranding of the team to OG, which ushered in a strong debut season for the organization.
OG rocketed to the top of the Dota 2 scene by winning Dota 2’s first major, the Frankfurt Major 2015, which was followed by another first-place finish at DreamLeague Season 4. The team cooled off slightly from there, most notably posting a disappointing eighth-place finish at the Shanghai Major 2016, but heated back up in the summer with consecutive live tournament wins at DreamLeague Season 5, ESL One Frankfurt 2016, and the Manila Major 2016.
The victory at the Manila Major established OG as the first-ever winner of two Valve-sponsored tournaments, but that success throughout the season didn’t translate to The International. The organization made its TI debut after receiving the first invitation to TI6. Despite a strong group stage performance, the team were swiftly eliminated after losing to MVP Phoenix and TNC Pro Team.
Though OG’s success throughout the season was chalked up to the “Power of Friendship” within the team, that friendship couldn’t withstand a disappointing performance at TI. Miracle- left to join Team Liquid, MoonMeander joined Digital Chaos, and Cr1t- departed for Evil Geniuses. OG rebuilt around Fly and N0tail by adding Team Liquid’s Jesse "JerAx" Vainikka, Invictus Gaming’s Anathan "ana" Pham, and Alliance’s Gustav "s4" Magnusson.
Once again, the approach of adding strong free agents around the Fly and N0tail duo paid off.
The new OG posted some strong performances at various live events but re-established itself as Dota 2’s best by winning the 2016 Boston Major. The victory was a shock, as OG was looked at as a considerable underdog. They proved the win was no coincidence by following it up with another first-place finish at the Kiev Major 2017.
These great performances during the season were again followed by a disappointing finish at The International and another roster shakeup. Ana split from the team, which resulted in a revolving door of replacements and several position changes. No combination of players or positions would work, which led to Fly and s4 shockingly leaving the team for Evil Geniuses in the summer of 2018.
OG was forced to quickly rebuild before the qualifiers to The International 2018. Ana returned to the lineup as a carry after playing with a few other short-lived squads while former coach Sébastien "Ceb" Debs eventually settled into an offlaner position. Finally, the team added Topias Miikka "Topson" Taavitsainen as the new mid laner.
The team worked its way to The International 2018 by clearing both the open and closed European qualifiers. The team made its proper tournament debut at the event, stunning the world by winning the event and killing their reputation for floundering at The International.
Ana once again departed from the team after TI8, which led to another mediocre season. He returned in the summer and sparked another resurgence for OG that saw them win The International 2019, becoming the first team ever to win The International twice.
