Code Name – STEAM

A sudden attack hits London when strange aliens descend on the city, and the STEAM unit is activated with a direct order to push forward and stop the invaders before they spread further. Henry Fleming and the rest of the team arrive on the scene with steam-powered weapons, and the first mission begins with a simple goal to reach the extraction point while clearing alien scouts blocking the streets. Each map opens with fixed cover spots, patrol routes, and enemy positions that must be handled step by step.

Turn-based movement controls every action, using steam as the resource that powers walking, aiming, and firing. Characters advance across grid-like maps, taking positions behind barriers or climbing to higher ground for better angles. Weapons include steam rifles, explosive launchers, and unique tools such as stun shots or area traps. Overwatch attacks trigger automatically when enemies move within sight, allowing careful setups that stop alien charges. Some missions require splitting the squad, activating switches, or escorting allies through hostile zones. Every action spends steam, making planning more important than speed.

As the campaign continues, tougher alien types appear with armor, ranged attacks, and movement patterns that require specific counter tactics. New STEAM agents join the team with special abilities that change how missions can be approached. Equipment upgrades unlock, improving damage, range, and support skills. Maps grow larger with hazards, tight corridors, and multi-layered areas that demand coordinated positioning. Briefings between missions explain where the aliens strike next and which objective must be completed to protect the city. The final operation leads directly into the alien stronghold, ending once the last commander is defeated and the invasion is stopped.