Braid

Braid is a puzzle game disguised as a 2D platformer. The player controls Tim during his search for a princess he has known and lost. Although the objective appears to be rather straightforward at first, the meaning and the motives become much more implicit and are interwoven with the mechanics during the course of the game. From the main hub, Tim can eventually access six worlds that consist of different areas. The start of each world reveals a part of Tim's background and emotions, rather than progressing a storyline. The second to the sixth world can be entirely explored without solving all the puzzles.

The game's concept is entirely based on time manipulation. Tim cannot die permanently as the player can rewind time at any moment and usually for any length, even all the way back when an area was entered. While rewinding, the music is synchronized in a similar fashion. Rather than a gimmick, rewinding is an essential element to solve the puzzles. The different worlds give a spin to the mechanic by introducing clones as the player collaborates in a parallel reality with a past version of himself, time can be affected through the movement direction, and Tim can create a circular area to cause time dilation. Certain items, enemies, and parts of the scenery are immune to time manipulation or behave in a very different way.