For those who want to see the Halloween skin on portal defenders or not, heres how you can activate it or deactivate it. When your on the pre-loader press the following combination.
up, up, down, down, left, right ,left, right
Also, happy Halloween Newgrounds
notsoman
It dosen't work... where do you do it in game?
SimCorder
you enter it on the loading screen before you push play