Cubox
Cubox is Chris Clements' 2004 cube puzzle, and it asks one thing of you: make the blocks in front of you look like the finished picture. Puzzles are picked by letter from the menu, each one a small arrangement of cubes that has to be rearranged into the pattern the puzzle sets.
The game is patient about it. It carries a GIVE UP button for the level that has you beaten, and words of its own for the other outcomes: a solved board makes you a CUBOX MASTER, a strong run an EXPERT PLAYER, a near miss a NICE TRY. Then the next letter is a little harder, and the cubes are a little further from where they need to be.
