well this tip goes for both phage wars 1&2. When there are two other viruses, it is best first to get the unoccupied circles, so then your virus is increasing more. taking out the weakest enemy is aslo i good strategy, and since there are two enemies both the enemies will attack each other too. Also go for the big circles first. (the bigger they are the faster they regain). try to keep your own circles safe, and keep the enemy from expanding. that's all i have, and i hope it helprd you! =)