Here are two screen shots from my game code named "RTS3D". RTS3D is a 3D Real Time Strategy game (actually the game is a mixture of 2D and 3D. For example the terrain is 3D while the units & most buildings are 2D). RTS3D takes place during the 18'th century and has a large emphases on naval combat during that time.
RTS3D also has a lot of features some of which are:
Wind direction and speed...the lower the wind speed the slower the ship is, etc.
Instead of having one universal resource stock pile that any building can take from, each Town Center has it's own stock pile.
When a unit is successful in battle, that unit gets an attack bonus. Therefore, a unit that has been through several battles is much more powerful than a unit that was just created.
Several other features having to do with the war ships.
There are several other features in the game, but I'm not posting any information on these now.
The engine uses OpenGL and the screenshots are all real game shots.
For more information on the game, please visit http://waltsgames.iwarp.com/rts3d.html