Introduction
Released by Capcom in 1990, Mercs (known in Japan as Senjō no Ōkami II, or Wolf of the Battlefield II) is a top-down run-and-gun arcade shooter and the direct sequel to Commando (1985). Featuring improved graphics, three-player co-op, and vehicular combat, Mercs upped the intensity with nonstop action across jungle fortresses, enemy compounds, and military strongholds. The game refined the classic arcade formula and paved the way for Capcom’s continued success in the action-shooter genre.

Development and History
- Developer: Capcom
- Publisher: Capcom
- Release Date: 1990
Built on Capcom’s CPS-1 arcade hardware, Mercs was designed as a more tactical and dynamic follow-up to Commando. The game introduced new gameplay systems, like screen-clearing special attacks and vehicle segments, while maintaining the core feel of solo soldier warfare. The Japanese subtitle, Wolf of the Battlefield, nods to the game’s narrative of elite commandos operating behind enemy lines.

Gameplay Video
Gameplay and Mechanics
Core Gameplay
Players control one of three elite mercenaries tasked with rescuing a former U.S. president held hostage by a military dictatorship.
- Top-Down Shooting: Classic 8-directional movement and shooting format.
- Three-Player Co-Op: Arcade cabinet supports up to three simultaneous players.
- Special Bomb Attacks: Limited-use screen-clearing bombs add a layer of strategy.
- Vehicle Segments: Players can commandeer tanks and other vehicles during certain stages.
Challenges
- Enemy Swarms: Constant waves of infantry, gun turrets, boats, and helicopters.
- Resource Management: Bombs and power-ups are limited, forcing tactical use.
- End-Stage Bosses: Each mission ends with a massive enemy encounter.

Cultural Impact and Legacy
- Strong Arcade Presence: Popular among fans of co-op action and military shooters.
- Expanded Franchise: Though not widely branded as part of the Commando series in the West, it’s a direct narrative sequel.
- Home Ports: Released on Sega Genesis (with a unique Original Mode), Amiga, and other home systems.
- Capcom Run-and-Gun DNA: Influenced later Capcom games like Alien vs. Predator and The Punisher.

Fun Facts
- Japanese Title: “Senjō no Ōkami II” directly links Mercs to Commando.
- Mercenary Codenames: In some versions, the three playable characters are known as Howard, Thomas, and Ben.
- Unique Genesis Mode: The Mega Drive version includes an exclusive single-player campaign not found in arcades.
- CPS-1 Showcase: Alongside Final Fight, Mercs helped demonstrate the visual capabilities of Capcom’s CPS-1 board.

Conclusion
Mercs delivered explosive arcade action with tight controls, impressive visuals, and crowd-pleasing co-op gameplay. As a sequel to Commando, it expanded the formula in every way and solidified Capcom’s status as a powerhouse of late '80s and early '90s arcade design.