Empires is a Half-Life 2 total conversion modification which combines the genres of first-person shooter and real-time strategy.
Balance Fission reactor 90 s -> 60 s Chemistry 90 s -> 60 s Improved Heat Transfer Fluids 90 s -> 60 s Advanced Coolant Engine 120 s -> 90 s Mechanical Engineering 90 s -> 60 s Upgraded Chassis 90 s -> 60 s Medium Tank Chassis 120 s -> 90 s G