Playstore Link:
https://play.google.com/store/apps/details?id=com.RSGames.RumsSpringAndDungeon
Game Name: ラムの泉とダンジョン (Rums Spring and Dungeon)
Game Version: 3.0.38
Needs OBB: No
Needs Root: No
Mod works on environments in which original apk works.
Confirmed working on Bluestacks 5 Pie and Nox...