This week's Humble Weekly Sale focuses on casual games developer extraordinaire PopCap Games, serving up downloadable copies of Peggle, Plants vs. Zombies, and other favorites plucked from the studio's back catalog.

Buyers who pay at least $1 for the bundle will receive Steam and Origin copies of PopCap's pachinko-puzzler hybrid Peggle, match-three gem-busterBejeweled 3, word-stringing puzzle game Bookworm, hidden-object adventureEscape Rosecliff Island, and sealife evolution sim Feeding Frenzy Deluxe.

Chip in more than $6 and you'll also get the Game of the Year Edition of PopCap's tower defense strategy game Plants vs. Zombies, DLC expansionPeggle Nights, and color-matching puzzler Zuma's Revenge. PopCap owner Electronic Arts is donating all bundle proceeds to The V Foundation for Cancer Research and the Melanoma Research Alliance.