Epic Games and Riot Games started a collaboration which resulted in several interesting addition to Epic's platforms, all originating from the studio behind League of Legends.
Riot Games and Epic Games have several things in common - they both possess video games that are massively popular and basically print money and Tencent owns significant portions of both companies. In the case of Riot Games, Tencent owns 100 per cent of the stock while Tim Sweeney still owns the controlling majority of Epic Games, with Tencent having acquired 40 per cent ownership of the company.
One or maybe more of these similarities may have contributed to the collaboration between the two companies and the catalyst was the upcoming Netflix show set in League of Legends universe, named Arcane.
The first part of the collaboration brings Jinx, a character from LoL to Fortnite in a bit of a crossover as the criminal from Piltover is coming to wreak havoc on the island now. Unfortunately for her, she will have to make do with the regular guns she comes across while Fishbones and Pow-Pow are nowhere in sight.
Meanwhile, Epic Games Store will now provide access to the entire Riot Games catalogue thus far, including League of Legends, Valorant and Legends of Runeterra. While it's good for EGS to have more popular games around, it's a bit of a weird move since people can just grab any of these games for free, without having to go through an additional launcher.
Anyway, all of them are now available on EGS. Keep in mind that this indirectly includes Teamfight Tactics, which is launched through League of Legends client.