The casino is located at the beginning of the Tombstone Trail. A rank unlocks later in the story, they are jumbo stardrops, moondrops, etc. If the player goes right at the very first fork in the trail, it is in the immediate viewpoint. I have lots of chips and was wondering if it would unlock before i beat the game. . S rank unlocks after you beat the game, they are tickets to. This gains you access to the RIP theater room and unlocks. I don't know if i'm near the end but i'm at nevermore now. ni no kuni casino prizes. During the post-game, when you go to the casino in Tombstone Trail you're awarded with a RIP pass. Every prize is seperated into ranks that show how valuable each one is with C being the lowest and S being the highest. advertisement.