As clever as Portal or Antichamber, suffers slightly from a distinct lag between the speed of thought and the speed of action. Too often you find yourself going "Oh the solution is A->B->C!" and then it takes slightly too long to actually enact that plan. Trudging around carrying orbs when all you want is the next delicious morsel of PUZZLE SOUP.

Probably the most I've ever said "Surely not..." playing a video game, only to discover that, yes, it surely is.