potatofoolsday
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PotatoFoolsDay ARG
The PotatoFoolsDay ARG is the second alternate reality game (or ARG) created by Valve to promote Portal 2, following the original Portal ARG. It consisted of finding Portal 2 references in the 13 indie games of the pack The Potato Sack. April 5, 2011 Two images can be found hidden in the...
