All The Answers here : developers of the 100 DOORS game series presenting a NEW STORY. Solve floors of puzzles, explore mysterious hidden locations, fight with wild beasts and help Alexander uncover the mysterious death of his uncle.
Solution :
Swipe all stones and reveal the crystal ball device.
Put the crystal ball in the device to get the raft.
Take the oar.
Put the oar on the raft.
Cut the ropes with the knife.
Take the crystal ball