Thanks for being fan and for your question.
Having the game developed on our own blockchain allows us to have 0 fees in the game and instant confirmations. No other blockchain would have allowed us this.
Also, a lot of the in-game features that make our game unique would not be possible: the lease options, registering/creating private contests, or the instant confirmation of a team entered in a contest.
If we would have chosen to have the game on Ethereum, the fees for ETH gas would have been higher than the price to lease a player, or the exchange fee (10 xfc). And, in the days when the blockchain allows confirmation every few hours, it would have been impossible to register your team for a contest or to edit it.