The pilots in this game are complete dum-dums and not following 14 CFR § 91.113 (b):

When weather conditions permit, regardless of whether an operation is conducted under instrument flight rules or visual flight rules1, vigilance shall be maintained by each person operating an aircraft so as to see and avoid other aircraft.

I had some aircraft pop in from off-screen and just run into another one that just took off.

This game would also be better if I could actually decide when to clear departures.