This is a simple 2-player 1v1 game. Each player gets spawned on their side of the level with 3 full hearts. The player can be controlled with a joystick. Each player also has a button with which they can shoot a fireball at their opponent. With each hit the player damaged will lose a heart. As soon as one player reaches 0 hearts the game is over.

Author's statement: "ElemAR is the prototype of the thesis paper I am doing as part of the European
research project ImTech4Ed – Immersive Technologies for Education. After joining as
a student this research project, I decided that my choice of immersive technology
would be AR, simply because VR requires dedicated devices. And also, because it made
more sense to develop a mobile AR application, considering that would be the easiest
device to implement in school systems for new technologies or learning methods.
After that decision, I brainstormed some ideas that could be both immersive and
educational."