Titans of Steel: Warring Suns
GrimithR
"Titans of Steel: Warring Suns" is a Battletech-inspired mech turn-based strategy game developed by the now-defunct Vicious Byte and published by Matrix Games in 2003. The game primarily plays out on a hex-grid map in titan-on-titan tactical combat, although there are supplemental RPG elements which may allow for additional options on the field of battle. Like its freeware predecessor, simply named "Titans of Steel," Warring Suns is easy to learn thanks to a strong user interface and extensive help files.
Also like its predecessor, Warring Suns is free. Originally commercially released, Matrix Games made the game free to play as a Valentine's Day gift back in 2008. If you're interested in playing it or simply learning more, check out the first video or consult a search engine.