What is the different with Steam and shipsim?
Do you mean this website: http://store.steampowered.com/app/48803/?snr=1_4_4__13 (http://store.steampowered.com/app/48803/?snr=1_4_4__13)
I had download it from this website, the official from shipsim game: http://www.shipsim.com/products/shipsimulatorextremesferry (http://www.shipsim.com/products/shipsimulatorextremesferry)
What is the different, because I had pay for 15 euro the ferry pack from the official site, and it don't work...
What is exactly steam?