anti-virus nanobot needs to kill many virus as possible as it can.

Author Comments:

this game is improved but it doesn't include bosses, story and new enemy characters. It is only alpha version. What do you think of this game? I will make final game soon with bosses, story and new enemy characters.
Before next wave, your health will be increased with 20 points (MAX is 100HP).
Updated: Thank you all for comments and scores. I will make final game with leaderboard, bosses and everything for next submission.