Ikaboze had access to a handful of save files at Nintendo Switch 2 Experience: Tokyo, one of which has a well-equipped Link that puts him right outside of Hyrule Castle. He makes quick work of Calamity Ganon.
So he just loaded a save file right before the end of the game. Not a speedrun.
Master of Magic. It's basically the Civilization gameplay loop, but adds fantasy creatures, magic spells, hero units and loot. There's a recent remake but it just doesn't capture the same vibes as the original, at least for me.
I was going to suggest CrossCode, it has some great characters. And while the game is balls-hard on default settings it has many adjustable options to bring it in line with whatever your skill level may be.