Then I bought 'Dwarfs!?' for OSX. I painstakingly downloaded 1.5GB on a third world connection. And it didn't work. Not just "had issues" or "crashed sometimes" but literally didn't even start. Multiple complaints through Steam forums, the developer's forums, etc. came to nothing. Emailing the developer personally with an appeal to resolve the issues also came to nothing.
And they have a 'no refund' policy.
What a scam!
As much as I love Bitcoin, here's an example of a situation where credit cards provide some protection for the consumer; I can issue a chargeback on the transaction.