Fix the system from the gaps in it that were formed due to viruses! try yourself as an antivirus. Put the puzzle together, close the hole, and move on to the next challenge! Hundreds of interesting levels will not make you bored! System Puzzle, antivirus, puzzle game, brain teaser, 2D puzzle, virus removal, strategic thinking, problem solving, one player, fun, challenge, brain training, mobile game, addictive, logic puzzle, spatial reasoning, block puzzle