UPDATE: Developer ignores other complaints; focuses only on coin complaints. Lowered to 1 ⭐ from 2. • Some differences are incredibly tiny, & there's no zoom feature. • It's difficult to earn coins. • Needs a failsafe in place so that the player with the most points wins by default if neither player can find the last difference, and they don't have any hints left. • Eliminate searching on an opponent's turn, or turn taking altogether, because it's unfair to players who can't pay.