Modern esports infrastructure for Metal Slug relies heavily on platforms like Score-Space and various Discord communities. Unlike modern live-service games, Metal Slug has no developer-backed prize pools. The esports economy is entirely community-driven, with bragging rights and historical placement on global leaderboards serving as the primary incentives.

In South Korea, Metal Slug found a home in the vibrant "PC Bang" culture, albeit via emulation. The Korean scene often emphasizes "No-Miss" runs (1-credit clears without dying) as a metric of consistency. This branch of the community popularized "TAS" (Tool-Assisted Speedrun/Superplay) viewing parties, where frame-perfect runs are analyzed for theoretical maximum scores.

As retro gaming continues to surge in popularity, Metal Slug stands as a prime example of "accidental esports"—a game designed for entertainment that evolved into a high-stakes test of human precision. It remains a vibrant monument to the arcade era, proving that even a solitary run through a war-torn battlefield can be a spectator sport.