The lowest tier game bundle sites basically do zero vetting; if it's got a steam key it goes in regardless of content or quality.

The latest Go Go Bundle Limited takes the cake, however: one of its games is a rudimentary top down shooter that seems to exist purely to give people an achievement called 14/88, which lets them display a big old 88 on their profile page.

for those not in the know, 14/88 is racist code, with the 88 standing for Heil Hitler.