Something is crawling across your desktop, eating your files and opening windows you did not ask for. You have a mouse and an antivirus beam. Your password is on a sticky note, in full view, where you left it.
NERD OS
Score 0 · Wave 1 · Best 0
Press any key to continue _
Move the mouse to aim
Click to blast · hold for the beam
Close a popup by hitting its × for double points
Keyloggers go for the sticky note. Stop them.
Files are your health. When they are gone, so are you.