Some achievements are hard to accomplish.but they give you a lot of XP. The more XP you have - the more coins you will get. When completed - achievements give you experience (XP).
You also have and joke sounds in the game (when you want to laugh on somebody.or cry.)Ģ) By purchasing them with money as In-App Purchase
In Rento you have extras, which are: different boards, different dice and different pawns.