I absolutely love real-time strategy games, so Moduwar was quite a catch to find.  It seems rather unique too, especially how you control everything. 

Instead of building a traditional base and units, you control an alien organism that can split and change depending on what you need to do.  It sounds seriously brilliant!  Even better, is that it will support Linux.  I asked on the Steam forum after finding it using the Steam Discovery Queue, to which the developer replied with "Yes, there will be a Linux version, that's the plan.  Thanks :)". 

Just look at how delightfully freaky and weird it is:

It's going to start off in Early Access, which the developer Biohex Games said should last for 6-12 months.  Could be very interesting to play such a strategy game online against others. 

Planned features:

Customizable Units: Grow your Modu, a base-unit that can split and reassemble, depending on your strategic needs and personal preferences. 

Explore Arkadia, a magnificent planet full of alien flora and fauna. 

Learn more about the Modu in a Single-Player story driven campaign, or play against your friends in Multiplayer mode. 

story driven campaign, or play against your friends in mode.  Grow weaponized organs or biological power-ups, to unlock dozens of unique combinations. 

Check it out and wishlist/follow on Steam , due out in "Q4" this year.