Looking for a specific kinda game

Bassicly, in the past ive only ever played free, multiplayer comp games like rocket league fortnite blah blah blah not the point. However, now all games i play feel really slow paced and kinda mid. Im looking for a game with insane power scaling- mayne at the start you have a sword and by the end youre throwing black holes at people. Dont really mind the style, maybe rpg, but i want it to be singleplayer. Also preferrably good graphics and a gameplay loop that doesnt get scal ifykwim. Anyways if u have any reccomendations please help