When comparing Cities: Skylines vs FlightGear, the Slant community recommends FlightGear for most people. In the question“What are the best games on Linux?” FlightGear is ranked 23rd while Cities: Skylines is ranked 31st. The most important reason people chose FlightGear is:
FlightGear has scenery that contains environments to fly in from the whole globe.
Specs
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Pros
Pro Large scale
At a total of 36sq.km of area to use (compared to SimCity 4), there is a large amount of room to build and play.
Pro Steady Stream of new content via DLCs
DLCs are optional, they do go one sale. Plus when a new DLC is released a bit of the content is released into the base game.
Pro Depth of field
There is a depth of field effect that will blur distant buildings, which mimics Sim City's diorama effect. It can of course be adjusted with a slider as to how much or little to use.
Pro Large Amount of Workshop Mods & Assets
With almost 150 thousand assets and mods, you can totally change the gameplay and look of the game
Pro Worldwide scenery
FlightGear has scenery that contains environments to fly in from the whole globe.
Pro Free and Open Source
All code written for FlightGear is opensource and available for anyone to use.
Pro Crash animations in some aircrafts
Pro It has world-wide multiplayer
Pro Live cockpit
Pro A lot of aircrafts to add
Pro It has amazing graphics
Pro You can almost recreate real incidents
Pro No bugs
Cons
Con Resource Heavy
If your computer doesn’t have decent specs, don’t expect to be able to run this game smoothly.
Con Expensive
If you want more gameplay features, you have to buy expensive DLC, but you can get them on sale sometimes.
Con Can be difficult to glean what one has done wrong in game
Cities: Skylines has difficulty letting the player know what they have done wrong, which results in a lot of head scratching.
Con Not as graphically advanced as commercial competition
Con Getting stuck upside down
After a crash a pilot may be stuck in an upside down position with no way to recover.