PLAYSON has penned a content agreement with Sellatuparley, Venezuela's leading sports betting and casino operator. . “We are beyond. [HOST] sites. PLAYSON has penned a content agreement with Sellatuparley, Venezuela's leading sports betting and casino operator. “We are beyond. [HOST] sites. PLAYSON has penned a content agreement with Sellatuparley, Venezuela's leading sports betting and casino operator. “We are beyond. [HOST] sites.