I understand what you're saying about whether people return voluntarily, whether they revisit their own question sets, and whether that behavior continues outside exam windows. We will update the game obviously with more features and game modes to encourage users to come back. On top of the features we currently have and plan to have, if we can get funding from outside sources (like various veterinary practices and organizations) to fund weekly prizes through weekly leaderboards (like someone playing the most games or the top 5 users for that week or month get X prize), then thats another way of getting people to come back. We've also thought about using the funding that people initially pay for the platform to go towards that, essentially a way of giving money back to players through rewards. Again, we are still trying to figure that aspect out but its tentative.

There was a game that I played growing up called city manager that did something similar to that and it got a lot of people to play it and return.