Hard to define, Fun comes first. New game modes announcement!

Officially, Command Heroes is a "Local split-screen multiplayer, co-op/versus, Action RTS with destructible environments."
It is more than that, but to list it all would result in an incomprehensible word vomit.
It has MOBA elements, rogue-like progressions & random events, with an arcade-y feel at times (like Smash Bros / Brawlhalla).