Can I use my activation key on more than one computer? Rovio Support Team June 08, 2017 11:14 Updated An activation key can be used to activate the Angry Birds game that you purchased on a maximum of three Windows PCs. Related articles How can I get an activation key? How can I get an activation key? How can I get an activation key? Why is Angry Birds 2 asking for all these permissions? Why doesn't the game work if I deny the permissions? I'm sure I'm connected to the Internet, so why is the game saying that the registration has failed? Comments 0 comments Article is closed for comments.