This Flash game is from Scenta, the same UK folks behind Reverse. Also created by Mobasher Iqbal, Nucleus features the same minimalist-type graphics, which are clean and simple, and adds atoms and valence electrons to create a sort of platform jumping game that is a lot of fun. Timing is everything as you try to maneuver the blue halo to the goal by jumping from electron to electron. To make a successful jump, click the mouse on any atom at the precise moment when two electrons are closest to each other. Later levels add motion to the atoms that require you to click while moving the mouse, which is not as easy as it sounds. I've made it to level 20, but I think the level may be sabotaged as I cannot make the final jump to the goal. Has anyone made it past level 20?