For April, Cheapass Games, as part of a Kickstarter campaign, is releasing a free tabletop game daily as .pdf files.
The games originally came in white envelopes with just the cards, board, and rules. The players were required to get the rest. (Dice, tokens, money, etc.) So instead of $30, a game would sell for $5.
When it comes out, I would recommend Give Me the Brain, a zombie fast-food workers card game.