People asked me about PS4 digital games.
What I have from leaderboard or likes:
Warframe: > 601,731 players with 22 kills (I only can see my page ranking... so add the guys that played less and killed below 22)
Resogun: > 250k *the ranking just show the first 250k*
Contrast: > 30.5k likes *you can only like if you had the game*
Don't Starve: > 39.7k likes *you can only like if you had the game*
Blacklight Retribution Beta: 41.1k *you can only like if you had the game*
I can't check others games because I did't have them.