But games cost money to make! How will you cover the costs?

Ah. Well, the traditional open source answer here would be: "They don't have to cost money either! Volunteer developers can create software through mass collaboration!" Unfortunately, while this optimistic view has proved practical for some kinds of project, it has not panned out so well for games thus far; So, we here at Metropolis do acknowledge that a good game will probably cost money to make (while not underestimating volunteer contributions, of course!) To that end, we intend to fund a full-time, professional development team to make Metropolis. Fortunately, we also believe there is a good way to pay for development while still keeping the game open: It's called community funding (the technical term is an "assurance contract"). You can read more about it in the "Funding" section of the FAQ.