[MetalMilitia]

I really thought you were better than this Chojin. What possible reason do they have to send you a free game?

There's certainly nothing in the T&C to suggest they have any obligation to honour any promises made for free items or even to keep your personal details private.
Do you know of anyone else that has received anything? Anyone that didn't have a stake in the company or reason to lie (for example to attract referrers)?

Do you have any reason to believe this is a legitimate way of obtaining free games beyond the fact that this unknown start-up said that they would give them to you?