Games like Ultimate Tic-Tac-Toe on Steam
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Transport Defender
Defend the transport ship from being captured by enemy waves on the way to the jump hole. Upgrade weapons, kill enemies, get cargo, transfer cargo, buy features, repeat.
Bloons TD Battles
Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.
Eternal Battlefield
Eternal Battlefield is a free multiplayer royale-style arena game. 4 teams of 2 go head-to-head in an exciting, spell filled arena death match where the last team standing wins. Defeat neutral creeps and enemy players to grow your forces!
One Troll Army
Play as a giant troll in One Troll Army - a defense game about building forts, upgrading your troll, and fighting off waves of enemies. Play Against The Twitch Chat!
Worm.is: The Game
Smash worms or slither trying! Warning: Incredibly addicting Multiplayer Game!
Arcanists
Players take turns in a race against the clock, utilising an array of spells to defeat their opponents in battle! Victory is accomplished by becoming the 'last man standing' (or last team) after all other players have been reduced to zero hitpoints.
Dota Underlords
Hire a crew and destroy your rivals in this new strategy battler set in the world of Dota. Introducing Season One: Explore White Spire and earn rewards on the Battle Pass. Pick from several different game modes, play on your own or with friends, and take advantage of crossplay on PC and mobile.
Guild Quest
You’ve just bought yourself a new island and it’s time to fill it up with QUESTS! Collect guildians, upgrade their guildhalls, and unleash them onto your own custom quest lines.
Battle Islands
Battle friends over air, land and sea in this epic WW2-themed battle strategy game.
Battle for Blood - Epic battles within 30 seconds!
Constant fun and excitement! Bloody fighting from the start. Epic battles within 30 seconds. An all-new game type is coming!
Puzzle Together Multiplayer Jigsaw Puzzles
Multiplayer jigsaw puzzles with voice chat! Play on your own or with friends, and feel like you're all sitting around the same table. Millions of puzzle images, upload your own, or create any puzzle you can imagine just by describing it!
Seeker
Help Alfie find the the stars to get back home to his homeland. If you don't want to follow this short story you can explore this very beautiful island in search of my personal Easter eggs. these Easter eggs will be very hard to find but in the end it will be rewarding. Thank you for playing Seeker.
Train Station Renovation - First Job
Welcome to the prologue to Train Station Renovation. This is where you will learn and teach how to renovate these small and the largest train stations in the world.
Sigils of Elohim
Sigils of Elohim is a free mini-game prelude to Croteam’s upcoming first-person puzzler The Talos Principle that challenges players to solve dozens of challenging sigil puzzles under the watchful eye of Elohim.
AdVenture Communist
The world's greatest communism simulator!
Nonogram - Master's Legacy
Master's Legacy - discover all beauty of Nonogram puzzles (multiple game modes, level sizes), master painting skills in Editor and share works with friends in Workshop. Become The Greatest.
Business Tour - Board Game with Online Multiplayer
"Business Tour" is a free to play multiplayer tabletop game. Build your monopoly with friends. Complete daily tasks, compete against the other players and receive trade items rewards!
Yu-Gi-Oh! Duel Links
Take on Duelists around the world with "Yu-Gi-Oh! Duel Links"! Step into a world that crosses dimensions and connects all Duelists. In Duel World, any location transforms into a Duel Field where heated Duels unfold!
Rise of Legions
Rise of Legions has shut down. It was a strategy and deck building game with dynamic, tactical gameplay.
My Lands: Black Gem Hunting
My Lands is a free online RTS where dark and light forces fight for Black Gem and dominion in a vast fantasy world. Cooperation between players, joint economy development, creation of clans and alliances and elaboration of a team strategy serve as the very foundation of the game.
Simply Chess
The classic board game comes to Steam with asynchronous online play and 100 levels of AI. If you are a chess enthusiast or someone who just likes to play a game now and again, this is what you've been looking for. This is Simply Chess.