To most folks, Rock Simulator 2014 is an internet joke. To some, though, it's an opportunity to throw some cash at the way of the game's "development team".
An IndieGoGo campaign for the project/joke set itself a rather modest target of $500, and has already gone past it. That doesn't sound like much when compared to real games, but those contributing to Rock Simulator's development know they're in on the joke.
Seven people, for example, have paid $5 for "a personal message, along with a picture of a rock via email!" Twelve savvy collectors have donated $15, and will in turn receive an actual rock. Six people have paid $30 for two rocks. Three kind souls have even kicked in $50 to not only receive three rocks, but also a note in the credits.
Note that no reward tier will actually get you a copy of the "game", because it's intended to be free-to-play. The fundraising campaign was just to clear the $100 cost of getting the game on Steam's Greenlight, with "leftover funds [going] directly into the development of the game".
To celebrate, there is now a trailer. It is everything you would have expected it to be.