Jet Set Willy II was considered a spectacularly underwhelming sequel to one of the best games of the ZX Spectrum; it was after all more of an updated, deluxe version of the original with a few extra rooms thrown in. Besides it hadn't been coded by Matthew Smith... Looking at it now though, I'd dare say this is the definitive version of Jet Set Willy. The new rooms are mostly excellent, the game lacks a series of crippling bugs, allows gamers to explore beyond the mansion and is as brilliant as JSW ever was. Really.
What's more, the Spectrum version of Jet Set Willy II has finally made it to the iOS App Store, complete with a ton of options, decent controls and a handy save feature. You can either grab it as a standalone game or -wisely- as an in-app purchase for the excellent ZX Spectrum: Elite Collection. Oh, and I do suppose you'll be needing this JSW link.