Rainbow Six Siege Seasons

Rainbow Six Siege launched in December 2015 with 20 operators, and has added content every season since. Ubisoft groups seasons into Years, with four Operations each. In June 2025, Year 10's second season relaunched the game as Siege X, with free access and the new 6v6 mode Dual Front.

We're now in Y11S3 Operation Split Fire, which started on September 1, 2026.

All 43Season

Year 1 – 20164Year 2 – 20174Year 3 – 20184Year 4 – 20194Year 5 – 20204Year 6 – 20214Year 7 – 20224Year 8 – 20234Year 9 – 20244Year 10 – 2025 (Siege X)4Year 11 – 20263

Year 1 – 2016

2016 · 4 seasons

Y1S1 Black Ice

Season · February 2016 · Buck and Frost (JTF2)

Y1S2 Dust Line

Season · May 2016 · Blackbeard and Valkyrie (Navy SEALs)

Y1S3 Skull Rain

Season · August 2016 · Capitão and Caveira (BOPE)

Y1S4 Red Crow

Season · November 2016 · Hibana and Echo (SAT)

Year 2 – 2017

2017 · 4 seasons

Y2S1 Velvet Shell

Season · February 2017 · Jackal and Mira (GEO)

Y2S2 Operation Health

Season · June 2017 · no new operators – a season spent fixing bugs and performance

Y2S3 Blood Orchid

Season · September 2017 · Ying, Lesion and Ela

Y2S4 White Noise

Season · December 2017 · Zofia, Dokkaebi and Vigil

Year 3 – 2018

2018 · 4 seasons

Y3S1 Chimera

Season · March 2018 · Lion and Finka, plus the Outbreak co-op event

Y3S2 Para Bellum

Season · June 2018 · Maestro and Alibi

Y3S3 Grim Sky

Season · September 2018 · Maverick and Clash

Y3S4 Wind Bastion

Season · December 2018 · Nomad and Kaid

Year 4 – 2019

2019 · 4 seasons

Y4S1 Burnt Horizon

Season · March 2019 · Gridlock and Mozzie

Y4S2 Phantom Sight

Season · June 2019 · Nøkk and Warden

Y4S3 Ember Rise

Season · September 2019 · Amaru and Goyo

Y4S4 Shifting Tides

Season · December 2019 · Kali and Wamai

Year 5 – 2020

2020 · 4 seasons

Y5S1 Void Edge

Season · March 2020 · Iana and Oryx

Y5S2 Steel Wave

Season · June 2020 · Ace and Melusi

Y5S3 Shadow Legacy

Season · September 2020 · Zero, plus the Tachanka rework

Y5S4 Neon Dawn

Season · December 2020 · Aruni

Year 6 – 2021

2021 · 4 seasons

Y6S1 Crimson Heist

Season · March 2021 · Flores

Y6S2 North Star

Season · June 2021 · Thunderbird

Y6S3 Crystal Guard

Season · September 2021 · Osa

Y6S4 High Calibre

Season · November 2021 · Thorn

Year 7 – 2022

2022 · 4 seasons

Y7S1 Demon Veil

Season · March 2022 · Azami

Y7S2 Vector Glare

Season · June 2022 · Sens

Y7S3 Brutal Swarm

Season · September 2022 · Grim

Y7S4 Solar Raid

Season · December 2022 · Solis

Year 8 – 2023

2023 · 4 seasons

Y8S1 Commanding Force

Season · March 2023 · Brava

Y8S2 Dread Factor

Season · May 2023 · Fenrir

Y8S3 Heavy Mettle

Season · August 2023 · Ram

Y8S4 Deep Freeze

Season · December 2023 · Tubarão

Year 9 – 2024

2024 · 4 seasons

Y9S1 Deadly Omen

Season · March 2024 · Deimos and the new map Lair

Y9S2 New Blood

Season · June 2024 · Recruit is replaced by Striker and Sentry

Y9S3 Twin Shells

Season · September 2024 · Skopós

Y9S4 Collision Point

Season · December 2024 · Blackbeard rework – no new operator

Year 10 – 2025 (Siege X)

2025 · 4 seasons

Y10S1 Prep Phase

Season · March 2025 · Rauora

Y10S2 Daybreak – Siege X

Season · June 2025 · the Siege X relaunch: free access, the new 6v6 Dual Front mode and a Clash remaster

Y10S3 High Stakes

Season · September 2025 · Denari

Y10S4 Tenfold Pursuit

Season · December 2025 · Thatcher rework and the 10th anniversary – no new operator

Year 11 – 2026

2026 · 3 seasons

Y11S1 Silent Hunt

Season · March 2026 · Solid Snake, the Metal Gear guest operator

Y11S2 System Override

Season · June 2026 · Dokkaebi rework, the Calypso Casino map and Ranked 3.0

Y11S3 Split Fire

Season · September 1, 2026 · Noor; Legend Division opened with the October 15 mid-season update – the current season

Read our guide →

Section images: official Year cinematics (Rainbow 6 / YouTube).

How seasons work