Peekaboom gathers more detailed, and perhaps more useful, data about vision. For ESPgame, the byproduct of the game was mutually agreed upon labels for common images. For Peekaboom, the location of the subimage generating the label is revealed by the game as well. Given knowledge about what portion of the image is related to a label it may be more feasible learn to recognize the appropriate parts.
There isn’t a dataset yet available for this game as there is for ESPgame, but hopefully a significant number of people will play and we’ll have one to work wtih soon.