Nice review thanks for the link.
I like his presentation, it makes it a lot more easier to listen. So I learned from this video that the competitors of Gizer are: Enjin coin, FirstBlood and MobileGo. Never heard of the first two, but the last one is very promising.
I know FirstBlood, its already listed on bittrex.
Firstblood is like betting on yourself, if you won the game you will get some token and you will lose your token if you lost the game.
It has a different concept with gizer.