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I quite enjoyed the single player on PC. Really nice on high at 1920 with a good sound system.
Anyway, in popularity, it's a close second, the factors to look at though is that CS:S is OLD. Yet it's still played by an incredible number of people, reason for this? In game basic physics/simple game play/constant updates and very effective game mechanics that make it less likely for noobs to just run around spraying you. No health 'regeneration' either. 100hp, 1 bullet to the head with an ak = dead. Clear precise hitboxes too.
Anyway.. I'm blabbering
Anyway, in popularity, it's a close second, the factors to look at though is that CS:S is OLD. Yet it's still played by an incredible number of people, reason for this? In game basic physics/simple game play/constant updates and very effective game mechanics that make it less likely for noobs to just run around spraying you. No health 'regeneration' either. 100hp, 1 bullet to the head with an ak = dead. Clear precise hitboxes too.
Anyway.. I'm blabbering