If you’re only looking for a reliable time-waster, then Grindstone more than rises to the challenge—in many ways, it’s one of the best the iOS App Store has to offer. But I can’t imagine getting much out of this on a home console. The main issue’s the difficulty curve: once you figure out how the game “works” and how to manipulate outcomes in your favor (which you’re all but required to do if you want to stand a chance against the late game bosses), you’ll almost never struggle with a level again. While the endgame mechanics are a lot of fun to play around with, all they functionally do is provide a skilled player with even more potential angles of attack, which leads to awkward scenarios like the final boss being significantly easier than the earlier iterations of the same fight. There are some polish issues, too (why does it take so many taps and animations to refill your health and repair your gear, two actions which players will be doing after almost every level?), but the game as a whole has more polish than I’m used to on iOS, so I can live with it. A must-play on Apple Arcade; a hard pass on any of the marketplaces charging $20 for it.