How about some of the kids games? Not the math learning type but the adventure/puzzle ones. I’d love to see you working through Castle of Dr Brain on the highest difficulty, or some of the Super Solvers series like Midnight Rescue, Neptune, or Ancient Empires. I remember Super Solvers: Challenge of the Ancient Empires!
Yeah, I’d be all in to delve again into the Dr. Brain games (Castle and/or Island). See how well I can do now that I know a bit more of proper English and I can get through the fit-the-right-word parts without having to guess everything or using up all my tokens…
+1 to the follwing:
Gizmos and Gadgets, an amazing late DOS game of reading what parts do what for your machine
Outnumbered!: Maths puzzles! What else could I ask for!
Operation Neptune: More Maths?!??! Yes!