If your goal is to write high-performance games, your best bet is probably to transfer to a different school that offers a traditional computer science degree. The OU IT certification is a two year program. In the UK most Computer Science programs require at least 3 years to complete.
Thanks for the reply.
However there are some things from you answer that are not interely accurate, regarding the OU you do have the computer science pathway, the only difference is in the choice of maths that you can take of which you can take two different modules, one more advanced and other less advanced.
The undergraduate degree in OU takes 3 years to complete, if you do it full time.
You have 3 years of 120 credits each and a project to terminate the degree.
However you can also take IT certificates which are a different thing, maybe that was what you were describing.