Ninja Outbreak, a survival horror spin-off taking place in the Soviet Science Facility from Venusian Vengeance, is now available to purchase on itch.io: http://malec2b.itch.io/ninja-outbreak
The game is also currently on Greenlight, and could use your votes: http://steamcommunity.com/sharedfiles/filedetails/?id=355603149
In the game, you play as a lone scientist who must survive in the laboratory which has been overrun by Ninjas. The game is a top-down survival horror game with a focus on scarcity of resources and exploration. Explore a large facility with over 13 areas in search of tools to help you fight the Ninja menace. You choose how deep you go.
Check it out!