With longer development times it is natural that some series will take a long time until the next release, even popular series like GTA (13 years) and Elder Scrolls (15 years) haven't had many releases. So here is a thread where you can keep track of your favorite game series and their last release, feel free to edit any time. I will add some of mine.

Final Fantasy (2 years)

Nioh (0 years)

Digimon (1 year)

Romance of the Three Kingdoms (6 years)

Disgaea (3 years)

Dynasty Tactics (23 years)

Kingdom Hearts (7 years)

Infamous (12 years)

Persona (10 years or 2 years if Reload)

Shin Megami Tensei (5 years)

Star Ocean (4 years)

Tales of (5 years)

Valkyria Chronicles (8 years)

Uncharted (9 years)

Dragon Quest (9 years)

Overall pretty spoiled. But I would like Dragon Quest, Valkyria Chronicles, Persona and Kingdom Hearts to come out already.

Futa House Femboy will receive a sequel this year... so 0 years?

I think with Mega Man its been like 8 years. Although it may have gotten some mobile games I dont care about.

Fallout (11 years) (mainline SP)
Mass Effect (9 years)
3D Mario (9 years)
Ratchet (5 years)
Persona (10 years)
Rayman (13 years)
Wipeout (14 years)
Crash (6 years)
Spyro (18 years) (longer for a good one)

DQ hasn't had a new game in 9 years???

TLOU - 2 years since remastered. 

Reimagined is coming out and HD-2D remakes have come out, but yeah 9 years since DQXI.

Bloodborne 2015

To name a few 

1. Half Life - 6yrs since last game (VR). 22yrs since last mainline release. 19yrs since last DLC
2. Mass Effect - 9yrs since last mainline release.
3. Metro - 7yrs since last mainline. 2yrs since last game (VR)
4. Resistance - 15yrs since last mainline. 14yrs since last game.
5. Dishonored - 10yrs since last mainline. 9yrs since last DLC.
6. Bioshock - 13yrs since last mainline. 12yrs since last DLC.
7. Knights of the Old Republic - 23yrs since last mainline. 15 since last game (MMO)

🥲

Better to be dormant than being old enough to watch all your favourite franchises getting butchered..