The Adventures of Tintin: The Secret of the Unicorn (video game) wants to get the third scroll, and that he is in fact Allan's boss. After a fight with Allan, Tintin gets the third scroll and heads off to Brittany, where he and Haddock earlier identified as Sir Francis' hideout. Learning that the scrolls contain the coordinates of the treasure of Red Rackham, Tintin and Haddock plan to head there, but Haddock is kidnapped by Allan, who uses him as a hostage to get the scrolls. After rescuing Haddock, Tintin discovers that the treasure is hidden within Marlinspike Hall. There they find the treasure and Thomson and Thompson arrest Allan and
Tintin and the Lake of Sharks Nouchka free for the device, but, unaware of Tintin's arrival, the children escape from their cell and hijack an underwater tank. Rastapopoulos takes over control of the tank with his computer, but he then notices Captain Haddock's sub on his monitor and uses the tank to fire torpedoes at Haddock, which provokes a fight between Tintin and the other gangsters as he attempts to stop Rastapopoulos. Haddock's mini-sub is hit, jamming its propulsion, and the tank is returned to the base by remote control. While waiting for the children to return, Rastapopoulos takes Tintin to his office and shows him