Steam has revealed which games made the most money on its platform in 2017, kind of.

In typical Valve fashion, this is presented in a slightly awkward fashion. Rather than being a straight-up list of the best-grossing titles, the firm has decided to rank them in tiers of Platinum, Gold, Silver and Bronze.

The best-selling twelve, the Platinum tier, features big hitters like Playerunknown's Battlegrounds, Rocket League, Valve's own Counter-Strike: Global Offensive, Grand Theft Auto V and Divinity: Original Sin 2. Two free-to-play titles made it into the Top Ten - DOTA 2 and Warframe.

The Top Ten is also a strong indiction of how games as a service titles are performing long term, with 2015's DOTA 2, Rainbow Six: Siege and Grand Theft Auto V PC releases making the cut.

The Witcher III also appears, likely boosted by anniversary sales for the franchise and sheer popularity on PC, and Ark Survival Evolved comes in after launching out of Early Access last year.

The Gold tier - No.13 to 24 - features other PC stalwarts such a Fallout 4, The Elder Scrolls Online, ARMA III, Dark Souls III and Stellaris, as well as Assassin's Creed Origins, Call of Duty WWII and Nier Automata.

For Honor also makes the cut - good news for Ubisoft amid a media narrative that suggested that Ubisoft's sword-fighting title was something of a failure after its early 2017 launch.

You can read the full list here.