Janitor of the Lost Tomb

Janitor of the Lost Tomb is a game where you are the titular Janitor in an old tomb which is raided regularly by various Adventurers. Your Job is to put new Objects to find for the next batch of Adventurers. To do so, you have to charge crystals by sacrificing some of your own powers. But be careful on your way, because you never know what's inside a lost Tomb.