可以和朋友在线一起玩的策略（Tower Defense）游戏共 120 款，包括Stronghold Crusader HD (2012)、Stronghold HD (2012)和Yet Another Zombie Defense。
全部游戏: 24
The highly anticipated sequel to the best-selling Stronghold, Stronghold Crusader HD throws you into historic battles and castle sieges from the Crusades with fiendish AI opponents, new units, 4 historical campaigns and over 100 unique skirmish missions.
The original castle sim, Stronghold HD allows you to design, build and destroy historical castles. Engage in medieval warfare against the AI in one of two single player campaigns or online with up to 8 players.
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
Tikiman the Forest Defender is in trouble. Hordes of monsters are sweeping through his realm, hoping to chow down on his offspring – and it’s up to you to defend them. By placing weapon towers at strategic points around the landscape, you can destroy the invaders and save the little ones.
《Sanctum 2》把塔防建造与第一人称射击结合起来，支持最多四人在线合作战役。你和朋友要守护产氧核心，布置角色装备，并可在完成战役后继续挑战生存模式。
与一位好友并肩守住魔法裂隙，在这款双人动作塔防游戏中布置陷阱、使用武器，对抗不断涌来的兽人。
Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!
和最多三位朋友一起布置防线，怪物涌向水晶时再亲自加入战斗。Dungeon Defenders将塔防策略、动作战斗，以及角色和装备的长期养成结合在一起。
A rock-solid combination of rock-rolling action, deep strategy, and captivating art and music from different ages of history, this is a game of crush or be crushed!
最多三人共享一张城市地图，指挥直升机和雇佣兵，参与节奏紧凑、难以预测的救援任务。
和最多七位好友一起，展开一场对抗两个 AI 帝国的长期策略战役。扩张能壮大抵抗军，但摧毁敌方关键设施也可能引来更多注意。
D.A.B. Your foes in co-op & PvP battles. (D)efend bases with weapons and skill. (A)ttack with clever AI armies. (B)uild amazingly creative defenses.
Rise of Legions has shut down. It was a strategy and deck building game with dynamic, tactical gameplay.
The original, uncompleted version of Vectorio. Claim resources, unlock new buildings, and expand your defenses as you fight back against enemy forces in the classic edition of Vectorio! Play for free now.
Brace yourself for a brand new action-packed Open World. Explore a huge world to gather materials for gear and defenses. Use everything at your disposal to defend your bases and defeat hordes of hostile monsters. Play solo or up to 8-player online!
Crystal Clash is a mix of Lane Battles and Deckbuilding - with action-packed tug-of-war strategy, just like your favorite RTS mods from back in the day! :) Play 2v2 or co-op with a friend, or pair up with new allies and enemies! Collect cards, build your decks and have fun crushing your enemies!
Topple Tactics is a physics-based multiplayer tower defense game where one huge player controls the map by placing towers and using abilities, whilst the little players level up their stats and equipment to reach the end of the map and defeat the huge player!
Lumencraft is a unique combination of a top-down, rogue-like shooter and base building with tower defense elements. Dig and light up dark halls of a fully destructible environment on procedurally generated maps and campaign levels to find precious Lumen - humanity's only chance for survival.
Dropzone is a game of action, strategy and skill. Win 15 minute battles by scoring points. Unlock gear, customize your squad of up to 3 Units and compete in Team 3v3, 2v2 or 1v1 matches. Lay claim to the riches of Europa!
Out of Ammo is an intense VR Tower Defense / FPS hybrid strategy game that will have you constructing defenses, calling in artillery, issuing orders, and taking direct control of your soldiers in order to survive a relentless enemy onslaught.
Destroy negativity, clear your mind! Particula brings you a new perspective in gaming, helping you to concentrate and relax. A three players co-op tower defense experience with a relaxing soundtrack, smooth visuals and gameplay.
A 1-bit real-time strategy game where you play as Death herself. Build structures, conquer lands, and lead legions of the dead against humanity. Humans thought they had defeated Death. Show them how wrong they were.