115 2D · Sandbox games your group can play together online, including Bloons TD 5, Craft The World, and PixelJunk™ Nom Nom Galaxy.
All games: 24
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.
Craft The World is a unique sandbox strategy game, the mix of Dungeon Keeper, Terraria and Dwarf Fortress. Explore a random generated world populated by dangerous creatures, build a dwarf fortress, gather resources, and craft all the items, weapons, and armor you need.
Build a soup company with up to three online friends or one local partner in PixelJunk Nom Nom Galaxy. Explore alien planets, automate production, and compete with rival corporations for the market.
WAKFU turns an online fantasy world into a grid-based co-op RPG, with dungeon teams that can reach six characters and challenges built around different group sizes.
Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.
Explore, build, and survive together in Project Zomboid, with online servers for larger groups or local split-screen for up to four players.
Battle Nations is back! Build your empire and lead your armies to victory! Choose from traditional troops and vehicles or unleash exotic forces like mammoths, velociraptors, sandworms, and futuristic plasma units!
Join up to seven friends in Contraption Maker’s online Maker Lab to build, test, and tinker with shared physics machines.
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.
Aberoth is a fantasy massively multiplayer online role playing game with charming retro graphics and tons of freedom.
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.
Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.
Take on short cooperative Challenges or build beside your friends in team battles, where King Arthur’s Gold makes fortress walls as fragile as your plans.
CONTROL FANTASY RACES, SET OFF TO CONQUER NEW LANDS, OVERTHROW YOUR ENEMIES AND CLAIM THE VICTORY! In this digital adaptation of the legendary board game, dive into a world inhabited by whimsical fantasy races.
Mine, build, and take on a changing world with your friends in Terraria. A desktop server starts with 16 online player slots; explore for better gear, then bring it into boss fights and invasions together.
Choose between different factions, with their own set of expendable soldiers, mechas, and weapons. Protect your brain, mine gold, and destroy the enemy cortex in his bunker complex!
Choose one of the characters and start your journey. The game has many interesting things in store: building, crafting, puzzles, bosses, mystery, laughs, quests etc.
Saviors brings the best bullet hell experience you can find on Steam. Play through 18 challenging stages in this ultimate test of tactics and reflexes.
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.
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.
Progress with every slain monster, learn over 80 skills through talents, craft hundreds of items, and explore vast procedurally-generated worlds in this ever-expanding sandbox RPG!
A physics sandbox game for people who like to play with digital toys. Create, control toys and define your goals.
A short sandbox rpg game that takes place on a square planet. Explore the world, gather resources, build a home and become stronger.
Deuterium Wars is a rapid 2D shooter. Create your own aircraft and plunge into heated battle with other players. What awaits you: an extensive role-playing system, craft, trading, and much more on a single server for all platforms.