The listing, Wizorb, BIT.TRIP.RUNNER, Gratuitous Space Battles, and Jamestown - Steam Key has ended.
NOTE: All 4 games are tied to a single key...
http://store.steampowered.com/app/207420/?snr=1_7_15__13
http://store.steampowered.com/app/63710/?snr=1_7_15__13
http://store.steampowered.com/app/41800/?snr=1_7_15__13
http://store.steampowered.com/app/94200/?snr=1_7_15__13