What is an unpopular gamemode that you think is overlooked and deserves more players?

You always hear about DarkRP, Prop Hunt, TTT, and all of the other modes that became huge and are largely what gmod is known for, but what is a mode that has a smaller playerbase you enjoy a lot?

One that I've had plenty of fun with friends in was Smash, where you're standing on pillars and floor tiles that have physics applied to them and boulders come falling from the sky to flip them around. Winning means you have to be the last one standing (or the last one who hasn't fallen to their death yet!) There's also a variation where players are selected to shoot the boulders. Both are simple but can be fun for hours with the right crowd. I wish it had more recognition..

Absolutely murder and among us gamemode deserves more players.

In my opinion it's amongus gamemode it was very good but people don't play it

Search and Destory, wish more people played that!

In my opinion this is "trash compactor", really fun try it.

I personally love Hide & Seek, as it is a very simple, but extremely fun gamemode, and barely anyone plays it nowadays

If I had to list the best modes, I would definitely put Murder and Prop-Hunt on that list, which were definitely once the foundation of all Garry's Mod servers, just like TTT.
I could also recommend a rather old mode, which is called The Hidden. I admit, I don't remember exactly what it was all about, because I personally never played it, but I watched a lot of videos on this mode, and it looked pretty fun. I'm sure that if you do some searching, you can easily find its description.
In addition, Trash Compactor and SledBuild are also worth mentioning, unfortunetly both of which are already forgotten, but very entertaining modes nonetheless. Both Trash Compactor and SledBuild are best played with friends imo