Øystein Eftevaag - is a video game programmer. Øystein Eftevaag began his career in 2015 and has worked for companies such as Alice & Smith. Øystein Eftevaag's first game was The Black Watchmen which was released 10 years ago. Best Game Øystein Eftevaag contributed to was The Black Watchmen. Øystein Eftevaag's latest work is The Black Watchmen which was released 10 years ago.