Forts

Blow something up with Forts from EarthWork Games.
A Physics-Based RTS Experience
Forts is a physics-based real-time strategy game that allows players to build custom bases and arm them to the teeth with an array of weapons. Players can compete in online multiplayer, skirmish mode, or even take on missions in the single-player campaign. The game features four factions: Eagle Empire, Dragon Army, and Iron Bear Alliance, and each faction has its own commander characters with unique abilities. Furthermore, Forts also includes sixteen unique weapons and power-ups to choose from, a challenging skirmish mode for intense fights, and unlocked tech trees for further customization and replayability. With all these features coupled with a powerful replay system and built-in level editor, Forts provides an immersive experience for players of all levels.
Twelve Commander Characters With Unique Game-Changing Abilities 
The commanders available in multiplayer or skirmish mode provide different advantages that can be used to adapt different strategies. Each commander has passive abilities active throughout the battle as well as dynamic abilities that can be triggered once it is charged enough by damage dealt. For example, Eagle Eye from Eagle Empire has Laser sights that give snipers adjustable laser sights for increased accuracy; Bigger magazines which increase machine gun and minigun magazine capacity; Explosive bullets which is a dynamic ability that makes snipers and miniguns fire devastating bursts of explosive shells. On the other hand Architect from Dragon Army has Cheap materials which reduce fort building materials cost; Higher storage capacity which increases battery and metal stores capacity; 4x build speed which allows weapons, devices and structures to build 400% faster than the normal rate. Last but not least Armourdillo from Iron Bear Alliance has Cheap armour reducing the cost of armour and doors; Quick open Doors where doors open shut twice as fast; Rapid Repair where weapons, devices and structures are repaired at an increased rate for half the normal cost. 
Steam Workshop Support & Built-In Level Editor 
Forts offers gamers powerful replay systems as well as Steam Workshop support for modding where they can upload or download various mods created by fellow gamers freely. In particular, the built-in level editor allows gamers to customise their own levels to create a personalised experience whether playing solo or against friends in team deathmatch or co-op modes. There are many mod types available such as Fast Build mods where time spent waiting for techs weapons will be significantly reduced; Rapid Fire mods allowing players to fire more frequently without having to reload again quickly after each shot; Zero Gravity mods allow special blocks that provide zero gravity when placed inside them so you can move items around without being restricted by gravity laws etc.