Some parts of the interface are actually pretty similar to the old Kings Quest/Quest for Glory games lol. For instance you still cycle through the cursor with a right click to look, talk, walk, and left left click to use the action shown by the cursor etc. The combat is substantially different, and sort of like KoTOR you can pause during combat and plan the next moves for all your party members. It also helps to have at least some understanding of AD&D’s combat system, THAC0 in particular, as that is what the combat is based on.

But yeah if you’ve been gaming long enough that you remember the golden age of Sierra games then you will probably be able to appreciate BG1 and 2