STRATEGY/RTS

AirMech - ACTION : RTS
A Nation of Wind - RTS/Arena Shooter hybrid
ASCII Sector - space exploration privateer/elite style
Beyond Beyaan - Master of Orion 4x Strategy clone
Cortex Command - [ High Quality Action , strategy ]
Death Inc - Strategy (Kickstarter)
Deep Space Settlement - Space RTS
Earth 2160 RTS/STRATEGY
Endless Space - 4x4 Strategy Space Game
Gnoblins - Strategy management RPG
Galaxial - Space Strategy
His Dark Majesty - Turn Based Strategy/RPG
Just Tactics - 1 on 1 Turn Based Strategy
Limit Theory - The possibilities are limitless - Kick Starter
Maia + kickstarter - new space god game
MORE + Kickstarter : 4x space strategy
OreSome - 2d space strategy
PoxNora: Battlefield of the Immortals - HQ Top Down Online Strategy ( INDIE )
Predestination - 4X Space Strategy
Planetary Annihilation + KickStarter - RTS
Prison Architect - Strategy
Rebuild 2 - Zombies! Flash Browser Strategy Game
Red Shift - Space Strategy
Reprisal - inspired by Populous in your Browser
Space Colony HD
Stellar Impact - a mix between DoTA, naval battles and Homeworld 
Starbase Orion - 4x Space Strategy (Kickstarter)
Star Prospector - single-player sci-fi RTS
StarDrive - High Quality 4X Action Space Strategy
Starfare - Space RTS Indie
Star Command - RPG/Explore/Build
Star Lords - Space 4X
Starfarer - Tactical 2d Combat and Open World Game
Starship Corporation - Space/rts/strategy/Design
Twisted Insurrection
The Battle for Wesnoth - Excellent [ Turn Based / RTS ]
Uplink + Darwinia
Windward - Sid Meiers pirates inspired
War of the Web - Turn Based online
War for the Overworld
Warlords Battlecry II - RPG/STRATEGY 
Worlds of Magic - A True 4X Spiritual Successor To Master of Magic?
Xenonauts - XCOM heavily-inspired project