I don't understand... Will it be a platform for competitions in this games? How can a common player use it?
The common player will be able to monetize their play time be it in multiplayer or even solo. Basically, the premise is that tournaments will be abundant and easy to organize on the platform and prize pools will be secure on the blockchain so as a common player you could simply play in a bunch tournaments every week and make money if you've got the skill to win.
In solo modes, they've got single player challenges where basically if you're really good at specific parts of a given game you could hit achievements that end up making you money too.
Sounds pretty good to me
Easy to read whitepaper too 
. what kind of platform will be offered.