Super Mario Land has been recreated in its entirety within Super Mario Maker.
Let's get the bad stuff out the way - there's a fair amount of it, after all. The 3DS port of last year's Super Mario Maker has been shorn of some key features. You can create levels but there's no way to upload them properly, bar the cute but ultimately fairly pointless ability to send and receive levels via StreetPass. You can play other people's levels, but the search tools are absent, the ability to follow makers has been cut and - at least as far as I can tell in the version that's being released this week - there's no way to input codes and seek out a level that might have taken your interest on the Wii U. Instead all you get is a dumb list of recommended levels with filters for difficulty, and the 100 Mario Challenge that pulls in random levels for you to tackle.
Excellent build-your-own-Mario-game toolkit Super Mario Maker will launch for 3DS on 2nd December.