Portal
Portal hurts my brain, I just finished all the advanced maps... there was a few when I looked at it I yelled " WHAT THE FUCK!" and in I think the last one I spent about 20 minutes moving these boxes that I thought I needed to jump on to get to the next area... you know that kids toy with the 3 holes and the 3 shapes square, triangle, circle... well doing this it was like somebody gave me the toy, but made the hole for the square just small enough that it couldn't fit... then I realized I didn't need this at all... there 20 minutes i'll never get back lol.