ION is a puzzle game, you should not consider it as a physics handbook, just perform level tasks, training logic and savvy. To perform, it is necessary to connect all the circles on the field into a closed circuit, alternating a circle with plus and minus. If there is a red spark in the charge between the elements, then there will be no connection and you have to start the level anew. Think about where to start the chain, so as not to make a mistake and do not waste time re-passing.
