This is the second part of Bug War
. It's one of those games where you have points (spawns and towers in this case) connected to each other. You can sand units from one point to another along one of the connections. If the other point is occupied by others, each of the units you send will kill one unit inside. If you kill all units, you occupy the point. Occupying spawns is particularly useful, because they produce new units. You'll also need to send bugs between your own points to reinforce strategic ones.