If you have a gaming laptop with an NVIDIA dedicated GPU and an on-board Intel GPU and it fails to get past the initial "loading..." try the following:

Instruct windows to use the dedicated graphics card for Man O’ War: Corsair:

Open NVIDIA Control Panel.

Choose “Manage 3D Settings”, then “Program Settings” tab.

Under "1. Select a program to customize:" hit the "Add" button.

From here, navigate to the folder where your gog games are located.

Find the Man O’ War directory and the ManOWarCorsair.exe. Select it and hit open.

Under "2. Select the preferred graphics processor for this program" open the drop-down menu and select "High-performance NVIDIA processor".

Click Apply in the bottom right corner.