The particles are in motion when you're playing Brownian Motion. Each and every one of the particles that you see on the playing field have their own values, indicated on it by a number. Should you manage to be able to get two particles of the same values to touch each other, they will start to blink for a few brief seconds. You must be quick to succeed, but when they blink you are able to merge the two - click on one of the two blinking particles to merge the two into one. Once they are merged together, they disappear from the playing field and are replaced by one new particle, the value of which will be that of the two particles that made it up. The end goal among all of it, is to try and reach the maximum/top score in game, which is 2048. During gameplay your eyes and ears will be treated to the steamy sights and sounds of a show from a pair of drop dead gorgeous hotties - starting out, it's pretty tame and softcore, but once you get your score higher, things start getting much more explicit, and before long it's full on XXX hardcore!