Besiege

Global, Indie, Simulation, Multi-player, Steam Achievements, Single-player, Co-op, Steam Workshop, Includes level editor, Remote Play on Tablet, Tradable

Link to the game in Steam

Besiege is a physics based building game in which you construct medieval siege engines. Battle your way through a 54 level singleplayer campaign, unleash chaos with your friends in multiplayer, create your own worlds with the level editor, customize your game with mods through the workshop.