there’s a new pay what you want, support charity, Humble Bundle available.
the Humble Jumbo Bundle.
includes Natural Selection 2, Sanctum 2, and Majicka + DLC.
and if you pay above the average, currently just $4.16, you get three extra titles.
Orcs Must Die 2: complete pack.
and Serious Sam 3: BFE
and soundtracks for five of the games are included.
it also mentions more mystery games coming soon, that you will unlock when they arrive, if you pay more than the average.