LifePower,
The OpenSource part only applies to the game not the libraries that you use. I could hardly expect people to supply the source code of DirectX for example.

The aim of the contest is to produce a game, but it is also a way of helping the Pascal game development community by sharing code with up and coming Pascal developers in the future.

If you have libraries, I would think that this is a way to showcase how good they are. You could just supply a DLL/obj/dcu of your library under a licence that would only allow your libraries to be used for non-commercial games.

It is a pity you cannot take part. I hope you reconsider.