File size is 514mb so is it a Demo?

There is no 'Time to beat' info on the Store Page!!

File size in this type of game has nothing to do with game length. Time to beat is around 15 hours.

I wasn't implying file size = game length, I posed two questions:

Is it a Demo (due to small file size), how long is it (time to complete) which you answered with around 15 hours so thanks for that.

I'll wait for the GOG reviews and see if it's worth picking up in a sale.