There's a pretty good "challenge mode" in Ultra SM, and I found the game's difficulty to be up there with Gen 5 if you use it. Unfortunately, there's not just one switch that enables it, you have to follow the rules yourself. The "Challenge Mode" is very simple: Set Mode No EXP share unless you're more than 5 levels underleveled Never use items in battle No Pokémon Refresh That said, I appreciate you liking my hacks, and I hope Supernova and Penumbra live up to your expectations. One of the biggest design philosophies of my hacks is to present challenge without artificially limiting the player. Sure, they're designed to be played on Set Mode, with no (or minimal) item use in battles, and definitely no Refresh... But hopefully they won't be a cakewalk even if you use Switch Mode, spam Potions, and get Refresh hearts.