its a magical fps if that makes sense
it had classes like for ex TF2 but the skills were based around magic.
for example healing was done by throwing down a magical tree that sprouted up and healed everyone under it.
it wasnt a bad game imho but it had some serious shortcomings and maybe a to strange take on the "normal" fps to be really succesfull.
it also didnt help that they used the crossplatform deal as a gimmick.