I have to choose what to study at university and I really want to: make videogames (development) and study computer security and ethical hacking.
What course can you suggest me? Better if I study Game Dev or Ethical Hacking or Computer Science to achieve both? What university? (Pref. UK but USA or Australia too.)
Thanks!
If you are unsure which one of both to choose, do not specialize yet. Study computer science.
For Game Dev: It doesn't matter what you have studied to get a job in game development. It is important that you have done projects (games of course!) and that you know some people in the industry. So if you want to be a game developer, your tasks are: Learn programming, learn game design, create some games, make them public to get attention, and get to know some people in the industry.
For Hacking: This is similar to Game Dev: Learn the essentials, find vulnerabilities and exploits, report them
ethically, do it-security related projects, e.g., write programs. Get the attention of and connections to people in that industry.
A computer science degree provides a basis for both, provides a nice-to-have degree for future employers, and gives you some time to decide. It even provides you with the best basis to get a good job in another field if necessary (e.g. because you don't find a job in the field you want). You may as well specialize when you do your masters degree or even afterwards.
My advice: Put your next work into deciding for one thing. Doing both with the same priority will result in becoming a mediocre game dev and mediocre hacker. Do one thing and you have the potential to become an exceptional game dev
or superb hacker. Focus. You may still do one of both in your free time, but get your priorities straight. You
can not be successfull in both fields.