Fate of the Galaxy (FotG) is a single and multi-player total conversion using the FS2 Open Engine set in the Star Wars universe. The game is in development and will be released as a standalone (the game FreeSpace 2 is not required). Fate of the Galaxy also maintains an active website, forum and Discord Channel.
ISD-I on the left, ISD-II on the right
Cool, but what's the difference?
The one on the left is Imperial-I Class Star Destroyer and the one the right is Imperial-II Class Star Destroyer. Note the difference of the towers on the bridge and gun placement.
As well as other minor differences too. It'll probably be more emphasised when the model is finished.
ISD-I is more costly, and has less fire power. ISD-II is much more powerful, weaker hull, and some system were taken out to make it much more cheaper then ISD-I.