If you like any of these CCl'd Cheapass Games please consider making a donation to them. Why?

"Our free games are free. Really, totally, free. This way, we hope to get our games into the hands of as many players as we can, and we want you to feel comfortable sharing and copying our games all over the world.

But if you like our games, we encourage you to help us out, by making a small donation. Hit the "Donate" button in the top right of every page (it takes you to PayPal) and give us any amount that you think is reasonable. For reference, a designer's royalty on a $25 game would be roughly $1. A publisher's profit would be more like $5. But what really matters is how much the game is worth to you."
http://www.cheapass.com/about/howmuch