Does Lord of the Rings: Conquest Have PC Multiplayer? No—Console Only

No, the PC version is single-player only. Console versions (Xbox 360, PS3) had online multiplayer, but PC did not.

No known mods enable PC multiplayer.

Alternatives for Co-op LOTR Gaming

• Middle-earth: Shadow of Mordor/War: Competitive online modes
• The Lord of the Rings Online: MMORPG in Middle-earth
• LOTR: Battle for Middle-earth II: RTS with online multiplayer (older)