At the moment you can only buy different packs of Energy in the Marketplace but with the release on May 19th, 2012 you can also get some boosts after starting a game of FastFind. At the moment you can choose 2 out of 3 Boosts for the current Scene. Each Boost costs you Energy.
"Energy lets you play more scenes!"
Select a boost by clicking on the Select button. Click the X button to remove a boost you previously selected
Time Freeze Active and Caption of the Clue Swap