My top favorites actually got moved just recently with Subnautica taking a huge leap to my number 1.
The other games I tried and enjoyed was final fantasy 15 and I haven't finished Nier: Automata yet but its good so far as well.
Older games I played I enjoyed the Nintendo SNES's Donkey Kong Country so much. My first shooter was 007: GoldenEye
I enjoyed the old Command & Conquer series as well.
But listing my entire 160 game collection on steam would be disastrous for the post... So
A few good hits were
Rimworld(2nd favorite spot)
Prison Architect is good.
Stellaris had me going but paradox might end up breaking it.
I enjoy Crusader Kings II as well lol.
EDIT: HOW COULD I FORGET, Total War: Warhammer II has me hooked, cause why not? Dragons Vs dinosaur-like creatures in epic scale RTS style battle that are vividly detailed. With nice lore and background if you like that kind of detail.
Skyrim also has a special place in my heart.(Even if they used Wyverns)