Gaming

Double jumping. Something about double jumping just always feels really liberating. It's such a strange concept as well, with no analogue in the real world.

wallrunning from titanfall 2, driving a mech like in titanfall 2, basically every mechanic from titanfall 2

Any good movement mechanics. Shoutout to grappling hooks!

I love when games utilize impossible spaces. I feel like so many games try to stay grounded in reality, so I appreciate when a game really takes advantage of being a game and plays with reality a bit. (ie: Antichamber, The Stanley Parable)

Tunic's writing system was the reason the game was recommended to me and i was not disappointed. Figured it out on my own during the second or third section of the game, after spending more time on it than actually progressing.

Also a big fan of literally climbing on bosses in shadow of the colossus.

There are a few that I find really cool.

The "bullet time" in the max payne series was very enjoyable to me. Dodge-flying around enemies while bullets hit your last position and all looking like you are in the matrix movie? Yes please!

Then there was the flying in GTA5. The controls and "feel" of all the vehicles are very good, but flying is really implemented in a great way. Its by no means to difficult to learn (like a real simulator), but has a pretty high skill ceiling. To really "fly beautifully" you have to know your shit. And thats not even counting fighting air-to-air or air-to-land. It's beautiful.

Also I'm a sucker for all atmospheric games. Bonus for being dystopic. The System-/Bioshock series, Stalker, Fallout, Cyberpunk2077 and many many more. Disco Elysium. Some games really are art in its purest form. Still entertainment, but art at the same time. I remember the first time I entered Novigrad in Witcher 3, not even on a good graphics card. Such a vivid, "living" town, with logical alleyways, bridges, beautiful architecture, soundstage just amazing, ... I think to this day no other game has surpassed W3 when it comes to creating a believable city. It's just art!

Creative allowance. Even if it makes the game "unbalanced".

Just Cause 2 with the grappling hook you could attach one end to a statue and one to a truck.

Grand Theft Auto 3 was the first game where I realized I could complete an assassination by stealing a police car, use the swarm of police cars following me as a "net" to trap my target's car so he couldn't drive away, and then blowing up the pile of cars with a grenade.

Rimworld where I can create a settlement of nudist vampires trading beautiful wooden sculptures for slaves to feed on.

The Sims 3 of course.

From the Depths, Minecraft, Space Engineers, Valheim also to a large degree.

Not sure if this is necessarily a mechanic, but I always like in rpgs especially jrpgs when you have times when you just hang out with your friends. I think it's great for pacing, world building and character development.