I’m about to create a simple Space Invaders game but I have a difficulty on it, I have to create like a Top3 weekly, from all the users and get the top three most scored users, this is easy, is a backend task, but I’m wondering if is there any backend for Unity to make it simpler, I know how to create API Rest for many frameworks but I’m used to use Spring, is that good for Unity? If now, what’s better? Is there any library to do an API calls from Unity? Like Retrofit in Android? I’m asking it because I’d like to have like a Log in to game, register etc, but I don’t know if it’s a work of Unity or not, since I need to have the user tracked. Also I want to export this Space invaders to iOS and Android, is that ok, right? I’ve been looking and Unity facilites to you the export.