Wow. simply wow... nice atmosphere, easy, quick, nice upgrades, replay value, addictive, customization. What more could anyone ask?
The game manages to keep your interest giving you upgrades after each level and letting you customize your virus making it stronger and stronger. I love it. 5/5 + favorites.
Criticism: I would be better if the sequencer was more user friendly.
More levels!
Achievements!
i love the fact that you can use as many shots as you want for a penalty of the score (which i don't care at all). I just love firing like crazy and killing them using "brute force". This game is fun!