Santeri "REllU" Relander, the founder of Still Running, has been a hobbyist indie game developer since 2005, and has been passionate against game developing ever since. In 2010, the original Zombie Kill of the Week was born, and it was the most succesful of REllU's games. In 2012, REllU unofficially joined Panic Art's Studios, to bring ZKW for mobile platforms. ZKW was released for Android in 2013, breaking over 100 000 downloads in less than a week. In 2014 though, CEO of Panic Art's Studios decided to stop supporting (and publishing) ZKW, since it wasn't making enough profit. But this wasn't the end of the story. ZKW-Reborn was starting to take a shape, and REllU founded a company on his own. Still Running was born, and ZKW-Reborn finally saw a daylight after nine months.