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