The primary mechanics of the game are moving, climbing, jumping, shooing, swimming, examining, etc, all the essentials for a Adventure game.
The puzzle I looked at specifically was a puzzle where you have to help Ellie, your "sidekick" character get across this body of water because she doesn't know how to swim. I like this puzzle because it doesn't tell you specifically what you're looking for, you just know that you have to help her get across. The puzzle's layout is pretty linear, as you can't advance the story without getting her across. You swim down and explore the environment, and while the path is linear the colors also do a nice job showing where you need to go!
Immediately after you submerge, you see bright yellow wall like the ones above surface!
linear path, leading color!
This puzzle uses very subtle "unusal use of object" and "maze" puzzles.
The game makes the player feel smart because it leads them to believe that they found the thing all on their own! They could've gone different ways, or got lost,but they found the thing and now they feel a sense of accomplishment.