One way is to be very efficient with your resources. Make sure you are using your in - game currency wisely. Don't overspend on unnecessary items. For example, when building rooms, consider the cost - benefit ratio of different types of rooms.
ISBN is important for comics as it helps in identifying and cataloging them uniquely. It makes it easier for libraries, bookstores, and online retailers to manage and sell comic books.
I'm not sure which ISBN would be the best for your novel without more information. There are different types of ISBNs, such as those for print books and e - books. If your novel is mainly targeted at a digital audience, an ISBN for the e - book format might be crucial. You could also look into vanity presses or self - publishing platforms that offer ISBN assignment as part of their services. They might be able to guide you on choosing the best ISBN based on your specific needs.
Some comics have ISBN numbers, especially those published through traditional publishing houses. But not all indie or self-published comics might have them. It depends on how they're produced and distributed.
You can also contact the author or illustrator of the graphic novel if possible. They may be able to tell you the ISBN or direct you to where you can find it. However, this might not always be easy as they may be very busy. But if you are really having trouble finding the ISBN, it could be a last - ditch effort.