What is this board game?

Has rectangle pieces almost like dominos, but with only one number on them. They are all colored different, and you want to make pairs/triples. So like 3 red color 2’s or whatever. You can build off an opponents pieces and such.

One piece has a really weird face on it, I believe it is smiling?

Starts with “Ra” but I cannot remember enough for google to come up with answers. It has a “K” and an “M” and possibly a “SS” in it I believe.

Googling board games that start with the letter R or have weird faces on the pieces does not tell me anything