labrace will feature a lab themed room with a button activated killing mechanism (most likely steam/poison something like that) placed in the center of the map. Whoever presses the button will be safe from damage and all others will die; To encourage people to rush for the button whoever is killed by the env damage will lose a GG lvl (This may only work on servers that have suicide lvl loss turned on, will have to experiment).
First map released will be gg_labrace, for those wanting the basic map without the killing mechanism.