multiplayer, cooperative gameplay, online interaction, team strategy, shared world, player communication, in-game chat, real-time action, session-based matches, PvP (player versus player), PvE (player versus environment), co-op missions, multiplayer servers, social gaming, team-based challenges, multiplayer lobby, cross-platform play, matchmaking system, multiplayer modes, competitive gaming, leaderboards, multiplayer events, community engagement, online multiplayer, split-screen option, voice chat, game invites, friends list, multiplayer campaign, cooperative quests, shared progress, multiplayer maps, game lobbies, party system, team tactics, multiplayer experience, online community, multiplayer expansion.