Natural Selection 2 is a first person shooter cross real time strategy game being developed by Unknown Worlds Entertainment, a small ~6 person team in California. It is a stand alone sequel to the popular Half-Life modification Natural Selection.
The game is currently in beta, and is available to purchase for US$35. Purchasing the game gives access to the beta and the full release when the game is finished. The beta is patched regularly, at a minimum every two weeks.
NS2 pits the human marine Frontiersmen against the varied alien Kharaa. The two teams, of up to 16 players each, vie for control of strategic points of large and small maps, with the goal of wiping each other out.
Each team has a commander, who views the game from a real time strategy perspective. The rest of the team plays from a first person shooter perspective. Players may seamlessly enter and exit commander mode throughout the game. Teams may build a large variety of structures to aid them in controlling territory, upgrading equipment, and unlocking new lifeforms, weapons, abilities, and support units.
The game is built on a brand new, UWE proprietry engine called Spark. Spark features fully dynamically lit environments (There is no static lighting at all), dynamic occlusion culling, and extreme modability. All game code is written in accessible Lua, and stands apart from the C++ engine.
A full suite of Spark tools, including level editor, lua debugger, cinematic editor, model viewer, and more is included with the purchase of the game.