This app was mentioned in 3 comments, with an average of 2.67 upvotes
https://play.google.com/store/apps/details?id=com.iceblinkengine.ibb.ib2mini
Still in beta, the devs are working hard on it. Visit their website, too, you can find tools there to make your own modules which you could share with friends.
Old school rpg. Roguelike. Text based story with squad based tactical combat. I think I'm just giving descriptions rather than genre. The most similar I have seen are the Iceblink games. https://play.google.com/store/apps/details?id=com.iceblinkengine.ibb.ib2mini
The iceblink engine is very similar: https://play.google.com/store/apps/details?id=com.iceblinkengine.ibb.ib2mini