Hey I would suggest games made by Kemco! Like Asdivine Hearts, Asdivine Dios, Asdivine Menace, Djinn Caster and many more.
You can also play Aveyond. It was recently ported to android.
Epic Conquest is also a great game. A sequal is being made for windows and is available in early access in Steam.
All of these games are offline and available here.
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Some other games would be Elphis (by Com2us. But was removed from Play Store), Beast Quest, Grimvalor, Postknight, and Potion Punch.
All of the above mentioned games are for android. Some games for windows are mentioned below :-
Aveyond
Ella's Hope
Stargazer
City Racing