Editing Happy Tree Friends - Double Vision (section)

==Gameplay==
[[File:DoubleVisionDemo.png|thumb|An example level demonstrating how to use the annotations to find the difference in this shot from "[[A Bit of a Pickle]]". In this case, the difference is that [[Mr. Pickels]] is missing his hat.]]
The game was played using YouTube's annotations system. The player is given two images from one of the ''Happy Tree Friends'' episodes, with the image on the right side having one difference compared to the left. Choices were displayed in a 3x3 tile formation of annotations overlaid on said right-hand image, and clicking one of them would lead the player to an unlisted video determined based on whether they picked the correct answer or not. The video's length acts as the game's timer, meaning the player can still fail if they did not click any of the annotations when the video is about to end.