Is host tokens limited to gaming only?
Host tokens can be exchanged for HCC (Host Casino Chip) at their partner casinos which in turn can be used for playing games.
Not exactly but you will be able to use the token to host your own game. The token will have various kinds of utility like you will be able to use the token as native currency in host protocol, it will be used to purchase host casino chips and host token can be act as digital currency in high stack gaming in their partners casino.