Let’s see here.
There’s ample evidence (as shown in examples in the other answers) that the site delivers stuff you win.
There’s ample evidence and testimonies that the site is legitimate.
They don’t have a reason to lie (at least I think they don’t) since it pays off more in the long-run to do this kind of business.
Aaaand you get a site that’s actually a legitimate e-commerce business that takes a unique, kind of game-y take on shopping, I guess?
But yes, it’s legitimate although you should probably hold some of that excitement back until the item (PS4 in this case) arrives at your doorstep. You never know what might happen to it as it travels between Drakemall and your home.