ToME4 for me.
I was looking for a roguelike experience. It is hardly it, cause the single game run is about a week long, the default mode of play is with limited amounts of respawns (afaik about 7).
That, and that after spending some 250h+ in, i barely unlocked 30% of playable classes and races. The triggers are easy to miss, random (not in every game loop) or awkwardly specific.
It felt like I'm playing MMO RPG but singleplayer.
Despite all the crazy YouTube videos about beating her with wherever, she have weaknesses to certain items/strats, pretty much like all the other bosses in the game.