Delphina's House uses one of my favorite gameplay mechanics, parallel worlds where actions in one world affect the other.
In this short ParserComp game, you play a young girl who is moving, and who wants to explore her worlds one last time with here transporter box (like Calvin's cardboard boxes in Calvin and Hobbes). There are three main puzzles, but each puzzle can be solved in any of the three possible worlds available to you. This gives the game high replay value; you can play through 3 different times and solve completely new puzzles every time.
There are two sound-based puzzles, but they are not bad, and (like all other puzzles) they can be bypassed by doing other puzzles.
If you liked this game, you might like the author's other game, Molly and the Butter Thieves.