Deputy technical director Rockstar North Obbe Vermeil told about why from Grand Theft Auto IV The ferries that were visible in the first trailer for the game were cut out. For years, players thought that the ferries were cut due to optimization problems, but in reality, according to Vermeil, there were completely different reasons:
The problem was not real performance. Instead, they caused various physics problems when the cars ended up on the ferry. Additionally, NPCs were forming queues to get on or off the ferry. In general, they were more trouble than they were worth.
At the same time, there are still hints of the presence of ferries in the previous game: NPCs are still doing something similar to queuing on the piers. In addition, the game was still a closed territory in the Alderney and Algonquin region, and data miners found ferry images in the game files.
