You are absolutely right, blockchain games are always very popular and their coins are always growing in price.
I know popular blockchain games that already exist, for example
1) HunterCoin
2) Beyond the Void (ERC20 Nexium)
3) Augmentors (token DataBits)
4) Yggdrasil (FWIN)
5) CryptoKitties
6) BitQuest
etc
I love to play games and I would like to see the beta version of this game and find out what plans develop has set for itself. If will interesting bounty company perhaps, and help you attract investors.
I sincerely hope that LIBERTALIA will achieve the same results as the examples you gave. Definitely, you need to take a closer look at this project.