Idle games are all the same honestly, a few grab my attention, but the rewards for this game drop off very quickly. You collect cards fast sure, but you get strangled by coffee currency very early on. Reward boxes drop maybe 5 cards per box, which is plenty, but only 4 coffee out of 500 you need to upgrade even one character with the multitudes of cards you've collected. Edit: Just worked for three days on two events only to receive no rewards, minus another star.