Liber Magus

You were sent to an island with one mission — eliminate a dangerous mage. Where he's hiding is unknown. The dungeons scattered around the island are your only lead. Build your own spells in the spell editor. Just don't destroy yourself with them. Every day starts on the farm. Water your crops, tend to unusual creatures, brew potions. Enter the dungeon. Extract alive. The dungeon has a timer. Clear it in time — and you keep everything you found. Fail — and you wake up in your bed with empty pockets. Every run is a bet. The better your preparation, the better your odds.