For the whole decade? Gosh, now that's a tall order for my memory. So I cheated, I looked through each RPGwatch GOTY article to remind myself what came out this decade.
I'll exclude all older games from the 2010s that got enhanced editions or PC ports and I'll add a couple that weren't in the lists. Some games were released in different years to the year they appear in the charts, so not all dates are precisely accurate. I'll put them in order of how I'd rate them in any ranked chart:
Completed and enjoyed either entirely or for the most part:
1. Blackguards (2014)
1. Lords of Xulima (2014)
3. Drakensang: The River of Time (2010)
3. Dragon Age: Origins: Awakenings (2010)
3. Eschalon Book II (2010)
3. Serpents in the Staglands (2015)
7. King's Bounty: Crossworlds (2010)
7. Divinity: Original Sin Enhanced Edition (2014)
9. Paper Sorceror (2013)
10. Path of Exile (2013)
Completed and thought it was OK, generally satisfying:
11. Avadon: The Black Fortress (2011)
12. Shadowrun Returns (2013)
13. Slay The Spire (2018) (not really RPG in any conventional sense, roguelike at most)
14. Avadon 2: The Corruption (2013)
15. Blackguards 2 (2015)
16. Dungeon Rats (2016)
17. The Warlock of Firetop Mountain (2017) (a Choose Your Own Adventure Game)
Was enjoying it but incomplete due to technical difficulties:
18. Divinity II: The Dragon Knight Saga (2010)
Abandoned because I really didn't like it:
19. Shadowrun: Dragonfall Director's Cut (2014)
20. Legends of Eisenwald (2015)
21. Battle Brothers (2017)
22. Tyranny (2016)
23. Expeditions: Coquistador (2013)
Completed begrudgingly, so bad it was fascinating to see just how bad it got:
24. Theseus: Journey to Athens
25. Dragon Age 2
And I've probably forgotten some other games that sit on the periphery of the genre.
I've also spent a lot of this decade, probably in about equal measure, catching up on a whole raft of RPGs I never got round to playing/finishing from the previous decade. So I basically average about four RPGs per year, 2 of current gen and 2 from previous gen. Or, to put it in more archaic terms, about one RPG per season +1 or, if you're American, one RPG per quarter +1. Averages are terrible liars though, of course.
I've no doubt that my list will not even remotely resemble any lists from any media establishments, forums or even any other individuals
I look forward to spending the next decade catching up on the 2010s and picking out some nice new games as they come along.