While the official servers for the original MW3 are still active, many players prefer TeknoMW3 for its support, which offers better anti-cheat measures and community-run game modes. It also remains one of the only reliable ways to play Spec Ops Co-op via LAN or VPN services like Hamachi.
: It introduced increased recoil and "crush" for Akimbo (dual-wield) weapons to reduce their accuracy, especially when firing while moving or prone.