YouTube has released lists of the most-watched games and gaming videos of 2015, with titles like the ever-popular Call of Duty and streaming-friendly Five Nights at Freddy's leading the pack..

The list of top games was built from view counts and time-watched data:

◆ Call of Duty: Black Ops 3
◆ FIFA 16
◆ Five Nights at Freddy’s 3
◆ ARK: Survival Evolved
◆ Agar.io
◆ Five Nights at Freddy’s 4
◆ Fallout 4
◆ Mortal Kombat X
◆ Batman: Arkham Knight
◆ Until Dawn

As for specific videos, the top ten, based on number of views, shares, comments, and likes, are a mixture of commercials, trailers, Let's Plays, and comedy videos:

◆ Clash of Clans: Revenge (Official Super Bowl TV Commercial) (Liam Neeson – aka angryneeson52)
◆ Real GTA
◆ Star Wars Battlefront Reveal Trailer
◆ Five Nights at Freddy’s 3 Teaser Trailer
◆ WARNING: YOU WILL DIE | Five Nights at Freddy’s 3 – Part 1
◆ Discover Pokémon in the Real World with Pokémon GO!
◆ Fallout 4 – Official Trailer
◆ Elders Play Grand Theft Auto V (Elders React: Gaming)
◆ Halo VS Call of Duty
◆ Final Fantasy 7 – E3 2015 Trailer | PS4

Additionally, a survey was carried out with Ipsos MediaCT, which found that 42% of its respondents (aged 18-54) watched gaming videos at least monthly.

YouTube gaming content is big business these days, with some YouTubers becoming more or less overnight millionaires from monetisation.