Usually, i don't feel confortable with offers shortened in two lines and finished with an ivitation to discuss details in private channels. I am not a twitter user.
You should clarify if you are looking for free testers [which may not get attention here] as you didn't specify how many testers you need {few good folks}, or you will pay testers. How you are willing to chose them?
Maybe someone will be interested trying the game for free but this wouldn't garante that you will have an honest review.
Cryptucky Derby is a multi-player game with ongoing 12-horse races. Each race is a competition for other players’ TRX held in that race’s purse. Cryptucky Derby is a decentralized application built on the Tron blockchain.
Then players bet on horses, right?
Move this topic to "gambling" board. You will maybe find some users interested to test your game.