StarFence: Heroic Edition (Steam key).

http://store.steampowered.com/app/360750/
Beautiful space shooter with addictive hurricane gameplay and tons of fun! Do not let the enemy destroy your space station - they are many and they are very angry... Make your own epic space battle and winning strategy!

It is a nice twist of classical shooter and tower defence. We have developed a unique idea, which combines an original space shooter, tower defense (manual control of your turrets) and something like strategy (placing turrets, units, structures). No more boring destruction going along a predetermined path of enemies - lets fire in all directions! You have a base, some laser turrets...and maybe you have a luck! It is really cool fun game for a "time-killing".

Key features:

-Cool superweapons for massive destruction
-Base and turrets upgrades
-Tons of different bonuses (drops from destroyed enemy ships)
-Interesting unusual levels
-Insane evil bosses
-Great sound and music
-Lot of fun!