UWBO is a Tower Defense game about some cute waifus that try to prevent the invading monsters from absorbing the energy from the Energy-Crystals. Play it in coop mode with your friends to help each other and of course the cute helpless girls.
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No game lists Ultimate Waifu Battle Online as one of its co-op favourites yet, so here are the closest matches by Steam tags instead.
You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.
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Slice, burn, toss, zap, grind and gib massive hordes of repugnant orcs in this long-awaited successor to the award-winning Orcs Must Die! series.
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Fire with Fire is an online player vs player tower defense strategy game about ascendant fireball creatures fighting over the last remaining fuel sources of a dying planet. Save the trees and rise up the leader boards. New unique towers, creeps and arenas in development.
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Five-star tower defense with unrivaled depth and replayability. The Bloons are back in full HD glory and this time they mean business! Build awesome towers, choose your favorite upgrades, hire new Special Agents, and pop every last invading Bloon in the most popular tower defense series in history.
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Grab your hammers and start to craft in this co-op Tavern Defense for one to four players. As a team of Dwarves, you must gather supplies and build towers to protect your beloved brewery. Learn to cooperate to achieve victory in this chaotic multiplayer game!
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Use Traps and Spell Cards to fight back the magical masses! Blistering shoot-em-up action meets tactical tower defense as you choose from almost 20 popular characters to stop the fairy onslaught! Take advantage of their unique powers and tricky Traps to freeze, fry, and blow your enemies away!
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Crumbled World is a tower defense game where you're tasked to create a maze of defensive structures with the purpose to defend the world crystal. The world crystal is what keeps the world from further collapsing into darkness and without it no hope exists. Your missions is to defend different areas using knowledge and abilities gathered to adapt to new challenges.
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PixelJunk™ Monsters is back with the simple, yet highly strategic real-time tower defense gameplay gameplay of the original title, now with updated graphics and brand new multiplayer modes!
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Aim for the top in "JongEvo Live," a mahjong game featuring voice actors and VTubers. Use EX skills, react to sudden events, and deepen bonds to unlock voices and outfits. Join tournaments and connect with your favorite performers through live battles. Fun for beginners and pros alike!
