Play Portal 2 Free Online Game - Just Online Games is a great place to play free online games. New free online games are added daily and no registration is. The "Perpetual Testing Initiative" has been expanded to allow you to design co- op puzzles for you and your friends!. out of bytes. Play. We Create Stuff. Skip. Task no.1 - Meet the ASHPD. Task no. 2. Task no Task no.4 - Portal -Proof walls. Task no.