App developers design and build mobile applications for PCs, mobile phones and tablets. On a day to day basis an app developer may develop new apps or create 'mobile-friendly' versions of websites, work with other developers, designers and copywriters, design prototypes to suit client needs, write or amend computer code, test software, find faults and fix problems and much more.
A university- there are many different degrees you could undertake in many different areas.
An apprenticeship- there are many relevant degree apprenticeships that can support you in becoming a game developer.
You will usually need 2-3 a levels to undertake a relevant degree. You could do a foundation degree, higher national diploma or degree in:
Computer science
Software engineering
Computer applications development
Mathematics
Financial technology
The following apprenticeships may be relevant:
Software developer higher apprenticeship
Creative digital design professional degree apprenticeship
This is dependent on the company and area, you will also usually need to go through an interview process when applying for a degree apprenticeship in aerospace engineering.
https://careerfinder.ucas.com/searchjobs/?Keywords=game&radialtown=&LocationId=&RadialLocation=5&NearFacetsShown=true&CountryCode=
https://www.gov.uk/apply-apprenticeship
https://ascendle.com/ideas/7-interview-questions-to-hire-a-great-mobile-app-developer/