A game usually is defined as a set of rules and actions so that when you are playing the game no matter how many players play that game that you can get into some kind of win condition.
Looking at what other people have posted "paying off your house" or "filling the museum" in Animal Crossing are more like achievements that you can perform but they aren't necessarily a win condition.
A similar game that is more of a toy than really a game is the Stanley Parable. Sure you can get the Achievements in it but there is no real win condition at all. It doesn't even penalize you for not doing a task and instead figuring out the endings is what makes it fun.
Looking at what other people have posted "paying off your house" or "filling the museum" in Animal Crossing are more like achievements that you can perform but they aren't necessarily a win condition.
A similar game that is more of a toy than really a game is the Stanley Parable. Sure you can get the Achievements in it but there is no real win condition at all. It doesn't even penalize you for not doing a task and instead figuring out the endings is what makes it fun.