Because, first, I don't know how to create an Addons for OA in Quark. Then, I mixed Q3 art whit OA because while I was making the map, the MD3 models from Q3 were very well.
The map is "lineal" because it's experimental, it is my first map to a Q3 Engine. I was maked to Q2 but nobody play it today
I was make a question about the entities in Quark and an user said that to use GTKRadiant is better. I just am begining whit that software.