What games have been on your wishlist the longest?

Nameless: The one thing you must recall (added 2016)
WolfQuest: Anniversary Edition (added 2019)
Best Friend Forever (added 2020)

they arent that old, but they have still been there for awhile xD

It was Cuphead, probably added shortly before it was released. I have since played it on the Switch and hence removed from my wishlist.
So the next oldest is probably Assassin's Creed

Games still not available :
N1RV Ann-A: Cyberpunk Bartender Action (2019)
DELTARUNE (2021) (Ok, I could download the demo)
Facettes (2021)

Games available :
Cantata (2022)
Atlas Engine ( 2022)
Okami Original Soundtrack Vol. 1 (2022)

1. Dreamfall: The Longest Journey since 2012 (ha, fitting title!)
2. Gateways since 2012
3. Valiant Hearts: The Great War since 2014

all added 17/12/2015 (there are more from this date)

• Alien: Isolation
• Fable Anniversary
• Sleeping Dogs: Definitive Edition

Added these four on the same day (25.6.2016):

• Age of Empires II (Retired)
• Age of Empires® III (2007)
• Age of Mythology: Extended Edition
• Rise of Nations: Extended Edition

And this one two days later:

• L.A. Noire

I cleaned up my wishlist (removed some) so I'm not sure if my wishlist oldest would have been different.. But now it looks like this:

Kerbal Space Program Added on (4/22/2014)
Black Mesa Added on (5/6/2015)
The Witcher 3: Wild Hunt (Added on 5/19/2015)
No Man's Sky (Added on 3/3/2016)

1. Gunpoint - Added on 03/06/2013
2. Fallout 3: Game of the Year Edition - Added on 27/09/2013
3. Project Zomboid - Added on 19/11/2013

• 11/06/2016 DOOM
• 11/06/2016 Hyper Light Drifter
• 24/06/2016 Ori and the Blind Forest: Definitive Edition

• Firewatch
• Grim Dawn
• Broforce

all added in 2016

DORAEMON STORY OF SEASONS (since 2019), Batman™: Arkham Knight (since 2019), Stardew Valley (since 2020).
Probably the first one in my wishlist is: Greenlight Developer Access.
I've just noticed that Grand Theft Auto: Vice City is unlisted.

Pivvot (03/08/2014)
Deep Under the Sky (13/09/2014)
Ikaruga (04/10/2014)

I didn't realize that Ikaruga has been sitting in my wishlist for almost a decade, I considered buying it multiple times during sales but always chose something else instead.

Dying Light Added on 7/22/2013

＜/reality＞: 03/01/2018
Ys SEVEN: 16/07/2018
Ys: Memories of Celceta: 08/10/2018

After that it's 2019, I removed a lot of them some time ago as in, maybe if it's discounted so often and I never buy, do I really want them?

These are my oldest 3. I cleared my wishlist in 2021 so they're all pretty recent.

Hollow Knight: Silksong (Added 22/11/2021)
TUNIC (Added 22/11/2021)
UnderMine (Added 3/12/2021)

Metro Exodus (Added on 29th Oct 2018)
Divinity: Original Sin 2 - Definitive Edition (Added on 30th April 2019)
Tales of Berseria (12th June 2019)

Never really did wishlisted or buy games until I became an adult..

Empire TV Tycoon - Added on 31/10/2015
CrossCode - Added on 18/12/2015
Darkest Dungeon® - Added on 23/12/2015

That's three adventure games that will probably never be released:

• The Last Crown: Blackenrock (14.03.2016)
• In The Valley of Gods (08.12.2017)
• ASYLUM (01.02.2018)

And some games that are actually out:

• Harold Halibut (10.12.2018; released this April, waiting for discount)
• Last Epoch (01.05.2019; released this February, waiting for discount)
• Exanima (12.06.2019; still in EA)

Fully released games don't tend to remain in my wishlist for many years, I either buy them when I'm more or less satisfied with price or remove them when I understand I don't really want them. And thanks for the reminders, it's time for a bit of cleaning, there must be quite a few abandoned projects on my wishlist.

Also, I sympathize with your issue, my AC started leaking a couple of weeks ago, and I had a bit of a panic (ended up cleaning it at 4 a.m., fortunately that was enough). Don't really know how to survive the heat without it.

ZOMBI
Added on 19/08/2015

Rayman® Origins
Added on 14/02/2015

MDK
Added on 16/09/2014

Senran Kagura Estival Versus - 27 Feb 2018
Vector - 16 June 2018
The Evil Within 2 - 16 June 2018
Resident Evil 0 - 16 June 2018
Resident Evil 5 - 16 June 2018

hollow knight silksong 16/2/2021
both the ori games on 3/4/2021
hunt showdown on 20/7/2021
monster hunter world 19/10/2022

Faith The Unholy Trinity
World of Horror
Not For Broadcast
The Mortuary Assistant (they're all added in the same day!) ive been obsessed with these games, its weird that i didnt get them before the currency change, i dont know why i didnt.

Today I learned you can sort your wishlisted games by date added. How very cool! Mine turned out not as interesting as I thought, but still, I was curious. (: I added these in July 2020, not long after I got back on Steam after a seven-year hiatus. I had recently built my PC, and I was very excited to get back into gaming!

1. I.G.I. Origins
   I have so many fond memories of the original I.G.I. back when I was a teen. Naturally, I’ve been looking forward to this prequel, but ever since the developer moved to Unreal Engine 5 two years ago, there hasn’t been much news. I hope they’re doing okay.
2. Sekiro: Shadows Die Twice
   To be honest, I haven’t played a single FromSoftware game, they seem too difficult for my taste, but for some reason, Sekiro seemed the most accessible to me. We’ll see.
3. Detroit: Become Human
   As a long-time Quantic Dream fan, Detroit: Become Human has been on my radar for quite some time. Everyone I know who’s played it speaks highly of it. I can’t wait to experience it myself.

By the way, it was nice to see everyone’s lists. Thank you, OP!

View attached image.

View attached image.

My oldest is Black Ice, added back in February 2016