Russian middleware developer Unigine Corp has released Oil Rush, its first independently produced game title for PC, Mac, and Linux platforms.

Unigine describes the game as "a real-time naval strategy game that combines the strategic challenge of a classic RTS with the sheer fun of Tower Defence." It's also quite pretty -- the game's detailed visuals are powered by Unigine's own graphics engine. Included with the game are 16 single-player campaign missions and 15 multiplayer maps.

Oil Rush is priced at $19.99, and includes activation keys for Steam and Desura. A PlayStation 3 edition is set for release later this year.