I dont know what to make, the theme is Spring and its a bit confusing. What if I make 4-player game where you... fight with each other in the forest full of flowers and trees and everything that matches the spring or whatever?
Its a great idea but consider that very few people will be able to experience the 4-player aspect during that rating period. But you can always make a 1-player mode with comp controlled (AI)players.
My tip is go on google, find all the meanings of spring and then take the most unique one (something that is not about the season spring) and make a game about it.