I'm trying to clear mine by the end of 2019.
Wii U
Bayonetta 2 (probably about halfway done? might start over)
Xenoblade Chronicles X
Yoshi's Woolly World (pretty close to the end)
Mario & Luigi: Superstar Saga (VC)
Metroid Prime: Hunters (VC)
PS3
Ni no Kuni: Wrath of the White Witch (will probably restart)
Puppeteer (will probably restart)
Final Fantasy VIII (PS1; will probably restart)
Vagrant Story (PS1; will probably restart)
PS4
Gravity Rush 2 (not started)
No Man's Sky (will probably restart)
Resogun (not started)
Shadow of the Colossus (will probably restart)
The Talos Principle (will probably restart)
Switch
Dark Souls Remastered (just the DLC, Four Kings, and endgame left)
Dead Cells
Fe (pretty close to the end, I think)
Okami HD (about 1/3 through)
Overcooked 2 (not started)
Yooka-Laylee (not started)
I'm holding off on buying anything "extra" beyond my already-planned purchases to make more room to play backlog titles. Currently I'm actively working on Dark Souls, Okami, and Xenoblade Chronicles X, plus Smash, Spyro trilogy, and Assassin's Creed Origins.