On completing a mini-game you unlock an artifact. Each episode has one mini-game. There are 11 episodes in the game and 11 artifacts to find. As soon as you unlock all the artifacts you will need to use them at the final comics game at the end of the final episode.
There are four kinds of Bonus Items. Earn points to unlock them. After you purchase a Bonus Item it will be available only for the currently unlocked locations within a level. You need to find the Bonus Item on the location in order to activate it.
Thermometer – costs 10,000 points – gives limited hot and cold ability for your cursor
Surprise box – costs 25,000 points – gives you 10,000 points
Camera – costs 45,000 points – temporarily reveals the locations of hidden items
Palette – costs 55,000 points – turns the list of hidden items into pictures