Finished:
(Jan 09) Paper Mario Color Splash (Wii U)
(Feb 03) Bloodborne (PS4)
(Feb 07) Fire Emblem Fates: Conquest (3DS)
(Feb 14) Code Name S.T.E.A.M (3DS)
(Feb 22) The Legend of Zelda: Oracle of Ages (GB)
(Feb 23) The Legend of Zelda (NES)
(Feb 28) Shovel Knight - Plague of Shadows (3DS)
(Mar 23) Blaster Master Zero (Switch)
(April 11) World of Goo (Switch)
(June 22) Fire Emblem Echoes: Shadows of Valentia (3DS)
(June 26) Cave Story+ (Switch)
(Aug 11) Shadow of Mordor (PS4)
(Aug 20) Yooka Laylee (ps4)
(Aug 21) Slime-San (Switch)
(Aug 29) Horizon Zero Dawn (PS4)
(Oct 01) SteamWorld Dig 2 (Switch) x2
(Oct 04) The Legend of Zelda Breath of the Wild (Switch)
(Oct 17) Stardew Valley (Switch)
(Oct 17) Splatoon 2 (Switch)
(Oct 24) Super Mario 64 (Wii VC)
(Dec 05) Snipperclips (Switch)
(Dec 12) The Elder Scrolls V: Skyrim (Switch)
Complete:
(Jan 11) Shantae Half-Genie Hero (Wii U)
(Feb 24) Super Mario Run - Tour Mode (IOS)
(April 11) Snake Pass (Switch)
(April 26) Shovel Knight - Specter of Torment (Switch)
(July 8) The Legend of Zelda Breath of the Wild (Switch)
(Sep 21) Metroid Samus Returns (3DS)
(Sep 28) Mario + Rabbids Kingdom Battle (Switch)
(Nov. 14) Super Mario Odyssey (Switch)
Don't laugh at me, but I think I've done enough in Skyrim to constitute it as "beat". I've spent 110 hours with the game and completed all the main quest lines. Dragonborne, civil war, thieves, mage and companions guild, dark brother hood and both DLC quest lines. I have no unique main quest lines left. I think going further than this is entering completion territory