they’re great for short bursts of gameplay, each dungeon takes like an hour on average. if it helps your decision, the first game is the shortest at 10-25 hrs but is also the hardest. the hd collection has an easy mode that lets you kill most weak enemies in a few shots. the DS port of 1 is the definitive version & has maps to make the dungeons easier (there’s an English patch)
Legend of Mana, although it was broken, I never got bored with encounters. didn’t have to worry about items or mana, only health. if they added a mana system (ironic) and fixed the stunlock, would’ve been more balanced
I’d recommend dabbling in the tcg live app on mobile/pc, i believe you can enter your deck codes if you still have them & practice with the current legal standard