Trapped

Basically this was probably a programming exercise, so it is centered around some common tropes such as obtaining keys of different colors and unlocking corresponding doors. It is just what an author does to check out the mechanics of an engine (I did the same and later expanded the results).

It is short and I cannot say that it is really bad. The solutions can quite easily be found and I did not encounter too annoying moments that made me give up. There is a good will behind it, it contains a story (more or less) and it is finishable. Of course there could have been more to this and it cannot be compared with the masterpieces of interactive fiction, but for a first try it is okay.