This is a fun, addicting and easy-to-learn casual game.
Some minor requests: any chance of portrait orientation? This is a great one-thumb game.
Can you shorten the dice slot rolls? Just a quick flip would speed things up a little.
When you get a new reward, if you select one of a new type, it’s basically useless until you get a second one. Maybe allow for a reward in pairs, and single for already-owned ones?