The English version of Exos Saga is out on Android, it looks like the game is fully translated in terms of UI and stuff. The voices are in Korean which is nice, but some of the Korean voice overs is horrible, lol. Gameplay is a bit similar to Merc Storia defeat monsters wave after wave and press a button to activate their skill. The only thing that differentiates this game from others is the interesting artwork it has to offer. Try it out for fun!
Google Play: Link