A new group called as Game + is created on Facebook , that will upload your videos for branding your game for free on their Youtube Channel , For more information , Read this post :-
:- Game Plus | First Read this :--- | Facebook
Thanks to Unity3d for making of developers 
I like gamer-dev groups, but there’s something I would like to ask.
Will you invest into promoting your YouTube channel? Currently there are no subscribers or content.
Free exposure for Devs will attract lots of submissions for sure!
Locking it as it’s a typical case of “give us 500 codes and videos” etc. Don’t want it here and do not run this sort of promotion on these forums again.
In short, it only benefits the OP, not the users so I’m stepping in.
For the uninitiated voucher/code - reselling is a common practise these days. Not implying the op would intend to do that, just it’s one of the rising scams. Nobody should ever need to give away more than 10 codes in the game’s lifetime - and those should be 1 per top-tier reviewer.
There are no free lunches.