Cut the wires and disarm the bomb until the time runs out!
But do not worry too much. There are simple levels in the game that will help you to improve the experience.
You will encounter 96 levels of difficulty, throw yourself a challenge and try to reach, at least to half.
Depending on the level, you will be offered a different number of wires with different lengths and colors. To cut the wire, click on its beginning and end or vice versa if you do not make mistakes the ends will change the color to green. Cutting all the wires level will be passed.