Kinfire Delve: Callous' Lab (EN)

Publisher's game description:

Fight your way together into the depths of a mystical well known as "Callous' Lab." Callous, an indestructible being suddenly confronted with his own mortality, lures reluctant test subjects into his well to try his experimental cures. You must survive his labyrinth of illusions and mind games to reach his final challenge. Will you defeat Callous and send him back to the darkness from which he came? Or will you fail and become a rat forever in his twisted maze?

Callous' Well consists of four challenge cards, with Callous himself in the center. Once a challenge is completed, it is replaced by another; there are 52 challenge cards in total. When facing the challenges of the Well, you may only play one skill card from your hand whose color matches the color of the challenge card. That is, for a red challenge card, you may only play a red skill card. Some cards have two colors, others are white, or wild cards. If the card you play fails to complete the challenge, you can add one progress and try again, but you may incur a penalty for doing so. Other Seekers can help you by playing one of their own cards as a boost, but be careful. If you run out of cards, you will receive an Exhaustion before you can draw a new hand. Exhaustion cards are never good, but some are worse than others.

Completing a challenge grants you a reward, such as restored health or progress in the well, represented by discarding face-down challenge cards. Once you reach the bottom of the well, you face Callous himself. All Seekers share a health pool, and when this pool reaches zero, you are defeated. This is a game that requires teamwork.