Thank you so much, Yes let me answer your questions:
Resource for sel-promotion: yes we will. We are currently working on the first part of that system, the reqaurding and creadit system. Credits that vendors can spend in ads purchasing.
Each game needs to be launched by a desktop application called KSS Dreamgate. So every game will fit this rule, otherwise the game won't start. Based on that, we will be the first people to test each game application to check its compatibility with the Dreamgate!
But dont worry, the code that you have to implement in your games is very easy and we are creating several template and guide for most of the game engine out there.
Payment: at the moment we just activated STripe as a payment method. Our system already support other payment methods, that we will activate later after the platform launch.
Feel free to ask anything... we will publish some pictures soon to start giving you an idea about the platform, and we are also working on a internal forum platform, which we think could be helpful