I have been using a Mikrotik router (RB2011UAS-RM) for the past year (http://mikrotik.com). They have a device that is also wireless but I haven't tried that one. I may pick it up next year to play with it. It is full of features but can be a bit daunting to setup.

I know it is not a flash game... but it has definitely consumed a lot of my time and it is free.
http://lastchaos.aeriagames.com/