What is your favorite game?

Donjon Keeper defined "god games" for me.

Warcraft2 defined "RTS" (and of course I loved the following installments with Starcraft2 being my actual favorite, but I couldn't ever make a "favorite" list without War2 in it.)

Both of those games have set my minimal acceptance for graphism in top down games.

Oblivion defined "open worlds" for me and also set my minimal acceptance for graphism in first person game (making it very hard to get into Morrowind later.) My first "rpg" being Oblivion is also the reason why I heavily favor first person over third person.

HoMM4 defined "turnbased strategy"

Europa Universalis 4 defined "grand strategy."

Factorio defined factory games and redefined "puzzle games" as a whole. And it's also my favorite "city builder" in a way.

Minecraft defined "Survival games" (even though I find Subnautica better, same reasoning as for War2.)

And Outer Wilds defined something, a genre of games that doesn't exist yet or hasn't been named, but Outer wilds is the first one I've played for sure.

So yeah, that's how it has worked for me, any game that I would say is "