Could this be a modern successor to the Tribes franchise?
GarageGames is the game engine company that formed after Sierra/Dynamix (creator of Tribes) disintegrated. They make an engine that regular joes can afford to make a game, instead of having to fork out millions of dollars for something like the Unreal engine.
Developed internally by GarageGames, Fallen Empire: Legions combines distinctive freedom of movement with fast paced first-person combat to create strategic, team-oriented gameplay. The InstantAction platform has allowed Fallen Empire: Legions to leverage the best of what the web has to offer, creating an evolving experience for players that can constantly be improved upon. This is first-person warfare at its fastest and finest!