Bundle in a Box: Adventure Bundle is an indie bundle like none other. Unlike the other bundles, this one contains nothing but adventure games! For a minimum of less than $3US, you can get the following games:
But if you beat the average of less than $6US, you will also be able to download two additional games:
The games are DRM-free and help support charity and the Indie Dev Grant. For a detailed description of the games, see this post on Gnome's Lair.
Thanks to the bundle's co-founder, gnome for letting me know about the bundle.