...did you do anything other than just switching the assets?
Viewing post in FishFest GameJam jam comments
Yes. I edited the player controller to make movement easier, I fixed a bug where the player sprite was not visible during movement, I created a point system where colliding with fish increases or reduces your score based on which fish you hit, and I made a life variable that displays a game over screen when the life hits zero. It was rushed and hastily submitted, hence the buggy look. but I've polished it and edited the submission.