The instructions are quite easy to comprehend: there are three sets of explosives at your disposal, they are different in amount and thus in explosive power. Use this to properly distribute the explosive force. Use a mouse to drag them to desired area. Also there is a timer, you should press '-' or '+' to set it. Of course, you can blow everything up at once but then you won't be an 'accurate' exploder to beat the goal. There are obstructions that make this action online game
more captivating. It would be too easy and uninteresting for you to simply click the mouse as a detonator, wouldn't it? With this there are red buildings you shouldn't touch when blasting, so it's really hard to control falling debris. There are tree buttons below - reset, detonate, menu - use them when needed.