Defence Cell

Defense Cell is a tower defense style game: A Horde of viruses invades the cell, and rushes to its core. To stop them, you have to build protein turrets around the cell nucleus. The inner world of the cell is recreated based on scientific and medical data.

Only 10 waves of viruses, with each wave of viruses stronger and faster. So hold out for 10 waves of attacks and you will be immune))