Regret. Guilt. Romantic expectation. Braid doesn't just touch upon these things in passing; rather, its narrative and endlessly clever puzzle-platforming exist symbiotically, never taking the intelligence of its players for granted...or making any assumptions about what they may or may not understand. The game rules are simple -- move, jump, and control the flow of time in easily demonstrable ways -- but their applications are anything but. Likewise for the equally challenging story, which is built upon stimulating musings of life, love, and the search for another.