Your poll is missing a "I will put more than $30 into a project" option. Generally speaking, $20 for a digital-only game is the limit, but will toss in a full $60 for physical. There's no exact science here, but I only back games that to me look like they have a real shot at being actually finished without being half-assed. I haven't been burned (yet).
As I've never dropped money on a mobile game, chances are absolutely slim I'd ever back one.







