Game - Eador: Genesis
Platforms: PC(Windows) - GOG, DRM-free, Steam?(hard to tell, the Steam-version of Eador: Genesis exist, but it is not available to buy in "normal way")
Developer/Publisher - Alexey Bokulev/ Snowbird Game Studios
I' already have this game, and for me it is totally awesome and incredibly playable. I've spend with Eador: Genesis more time than with Heroes of Might & Magic 3. The battles are really complex and satisfactory, there is a strong "part" of cRPG, a lot of units and possibilities to create your army. Pity, that it doesn't have other multiplayer than hot-seat, but still it is one of the best turn-based strategy games I've ever played.