If you liked the puzzle design of The Witness, you’ll enjoy Taiji as more of that but with scenic pixel art.
Instead of a linear sequence of tutorials and puzzles, Taiji is open-ended. You can wander wherever you want, solve the puzzles you stumble upon, and ultimately discover this place’s secrets. Sometimes you find a puzzle that you don’t understand, so you’ll just have to leave it for later, when you’ve learned more puzzle mechanics. It’s like a metroidvania but gated by knowledge instead of abilities.
All the puzzles are built on grids of tiles that you can turn on or off. There are no tutorials; you have to figure out the puzzle mechanics on your own, hinted by environmental details.