This seems like a cool idea and I'd love to take part.
However, this works for books because they're inexpensive, and any sod with reading ability can pick one up and read it on the spot. Games on the other hand are really expensive, and not everybody has access to the same type of gaming machine...
But if you can get this to work and find enough people here with the right systems, go for it.
(And for the record I only have a high-end PC and a PS1, but not much money for gaming - I even think my monthly £9 sub for WoW is far too much and tend to only buy games when they're on the Steam sale unless it's from a developer I really love, like Valve)