I really love RPG where you can create kingdoms and wage battles and upgrade armies.
Living in a country where crappy internet connection just gives 5 kbps speed ,
It MUST BE, HAS TO BE, SHOULD BE, & ETERNALLY REMAIN OFFLINE.

Here is my list so far :

Games Played and Tested :[color=#006600][/color]

1. Ravensword : Shadowlands [APK+OBB : ~500 MB]. .Amazing 3D AAA title with hours of fun and story) Size.

2. Kingturn RPG [APK Only][Size: 27MB]

Not Played But Recommended and confirmed that these are offline :

1. Inotia 3: Children of Carnia [20 MB]
2. Battleheart
3. Pirates and Traders: Gold! [28 MB]
4. Andor's Trail [6MB]
5. Legends Arcana

RPG Asdivine Dios
Exsilium: 3D RPG
Galactic Phantasy Prelude [Apk+OBB]
Vampire's Fall RPG
Age of wind 2
Adventure town
Crusader
Rise of glory
Rusted warfare
1941 frozen front
DNA impact
Pirates hero
Battleheart
Heroes Call
Blazing Souls Accelate
Forgotten Tales RPG
Royal Knight Project Ange