Goal of the game: to click on all blue nodes up until every node is red.
Each time you press on the left button, the red nodes expands in the following way: they all contaminate every node they are linked with.
After selecting a blue node, press the button on the left to go to the next turn.
When all nodes are red, press the right button to go to the next level. A new graph will be generated.
How many turns will it take for every node to be red ? This is to be discovered !