There is a freely downloadable game for NES emulators called The Wit.nes, which is a more retro rendition of the incredibly good Jonathan Blow puzzle game The Witness. When you load up the game, you’ll have access to 32 puzzles and being able to move around a world map. The puzzles themselves feature a lot of the early types of puzzles, so they should not be too difficult for most people, especially if you have already played the Witness before. It’s free, so I don’t see a reason not to try this out for a bit.
Source: Itch.io (The Wit.nes)