Divide it into chunks. Make a to-do list and set a deadline for each ofthe chunks. When you achieve one chunk mark it done and then focus on the next.Remember, if you don’t know how to manage your Sisyphean tasks, they can keep you stuck even for the whole life.So, learn how to divide it and manage chunk by chunk.
I choose dinosaur game because they will develop all sorts of interesting conditions, all the heavenly environments, of these, if you're still right with them, eventually your world will be built.