Hi Paxil, just to add, I recall some sims such as "A10 Cuba" which have numbers painted on the runway thresholds indicative of the best approach. Although some pilots will do anything, I think most fields have preferred landing and takeoff headings. While some sims are great fun just getting organized from the runway, others simplify. Online sims which include variable weather conditions, such as rain, fog or high winds, could find it difficult although not improbable to find someone able to run the tower.
RASTER