Metro 2033 Coop Mod _best_

Since you didn't specify which game in the series you are talking about, I have broken this down into the two most likely scenarios.

Pros

Why play it:

These are roleplay-heavy maps designed for up to 4 players. They feature "civilized" stations, sewers, and side corridors, but you have to bring your own fun via Roleplay (RP). Metro 2033 - Paradox Mod (for Europa Universalis IV): metro 2033 coop mod