20 Stupid Decisions That Destroyed Their Franchise

17. Not Knowing When To Quit - Tom Clancy's Rainbow Six Siege

Debuting in 2015, Tom Clancy’s Rainbow Six Siege began as the series’ savior, with its online-only tactical multiplayer focus breathing new life into the license after the cancellation of the intriguingly atypical Rainbow 6: Patriots. Thus, it was the first mainline installment since 2008’s Rainbow Six: Vegas 2, and fans couldn’t get enough of it.

Ironically, however, Siege’s towering triumph has motivated Ubisoft to continually milk it with new changes and features for over 10 years instead of giving Siege a proper follow-up.

Ubisoft’s approach has spawned dozens of seasonal DLC to sustain Siege’s relevancy within the esports space. Last year, the company celebrated the game’s 10-year anniversary with its “largest and most transformative update” – Siege X – which introduced a new 6v6 mode called Dual Front alongside extra maps and various aesthetic and functional upgrades.

In December of 2025, creative director Alexander Karpazis told GameSpot that Siege 2 isn’t happening because they don’t want players feeling like they got “the rug pulled out from under them” with “changes.” He added: “There's also an element of, this is an amazing legacy we're building—why would we want to throw that away?"

Yes, console spin-off Rainbow Six Extraction showed up in 2022 and there’ve been a couple of mobile offshoots since then, but clearly there’s no new mainline title on the horizon.