"Jewel Spirits" is a new type of game that incorporates elements of deck-building roguelite into turn-based strategy (strategic simulation RPG).
Embark on a journey with your jewel spirits to explore the anomalies of the "Great Crystal of Time" in the innermost part of the gem cave!

Choose your favorite jewel spirits and organize your party

!There are only two jewel spirits, Ruby and Sapphire, to start the adventure.
You can add new jewel spirits to your party as you advance through the caves, defeating the demons that stand in your way.
The jewel spirits that you casually add to your group may turn out to be of unexpected use.
Find a combination of jewel spirits that go well with each other and create your own unique and powerful party!

The key to battle is to "switch" gem spirits!

In battle, not all of the jewel spirits you have chosen as your allies can be put on the field, but it is possible to "switch" with a reserve ally during battle!
There are various strategies that can be taken, such as replacing the most compatible jewel spirit depending on the enemy, or extending the distance of movement.
Use the "Switching" function to play with the demons!

Replayable, so you can play over and over again!

All the candidates for the jewel spirits you can join and the items you can obtain are all random.
Enjoy a play experience that changes as you play!