Tomb of the Last King

From the description: In Tomb of the Last King, adventurers will attempt to recover the priceless, stolen artifacts of their people. But the Last King's followers knew they would come, and have designed a dungeon that could cost them everything. The Tomb of the Last King is system agnostic, but it features some fun dungeon tools. There's a couple of puzzles, a procedurally generating hex-labyrinth, and a timer to track your progress as players attempt to flee the tomb at the end.