Barely completed, fully enjoyed.

I'm now at 294 completed of 634 total GOG games, just over 46% so at least I improved 1%. =-\

592 owned.
574 completed
19 left then...huh, less than i thought.

Two of them just won't work, so will come back to them last.....
No interest in the free stuff, so that save even more time :D

Counting only my GOG library it's about 18% finished. I've played most of the games I own until a point though.

There are some games, which I have abandoned or they don't have a real finish. So the percentage will never be 100%.

About 55 out of 476 games. I'll be dead before I complete them all, lol. :P
This is a better answer, lol.

Regarding playing (and by that meaning having played the game SINCE i bought it on GoG and not sometimes before in my life) - 19 out of 142 - or 13,4% . And ya playing in this case = "completing" - either way finishing the entire game or played it to an amount/certain point that i consider it finished or i would not touch them again - and no "ragequit" like after 2-3 hours included here - these 19 games were played "properly".
Regarding "buying" (taking an about a week old wishlist into account) - 142 out of 236 or 60,2% .
So ya quite a long way to go on both accounts :D - no rush on the "buy" though has the play account is still so low ^^

It is too disheartening to check.

I would turn a blind eye to it.

It's 50 out of 133, so about 37,6 % ;-)

About 16%.

8 more games and I'll have reached 40%

More every month.
I'm currently gathering less games than I'm finishing although the humble bundles change this now and then.
The moment GoG would sell all games without region locks, without regional pricing and with Linux ports, I'd be really f*cked, because I'd probably have to get them all if funds allowed this (which isn't the case with Bethesda's ridiculous prices for sure).
As soon as I'm on WinXP again, I'll play Shadows: Heretic Kingdoms and may not finish anything else any time soon, I guess.

54/361 = 14.958448753%

That's counting only the GOG games. If you consider the ~800 games I have as physical copies... *ugh*

6 completed out of 213 games owned on GOG - of those 6 games, 4 are Infinity Engine games that got finished several times: 6 times Baldur's Gate, 1 time Baldur's Gate Enhanced Edition, 3 times Baldur's Gate: Shadows of Amn, 2 times Icewind Dale, .

On Steam and Origin the fractions are somewhat more favourable:

Steam: 5 completed out of 118.

Origin: 6 completed out of 26 - of which Dragon Age got finished 6 times, 3 characters of which finished Awakenings as well).

With GOG games being DRM-free I feel like I have all the time of the world to finish them, so games hampered by DRM I tend to play first, plus many of my favourite games aren't DRM free (Dragon Age: Origins, the Battlefield series).

However, despite my previous sentence, as I'm mortal I don't have all the time of the world, so most games will be left unfinished, as I usually only finish 1-3 games a year.

TL;DR: me having some favourite games I play again and again is the main reason only few games get finished.

It depends on what you mean by "completed"?

Completed? What? I'm still trying to beat Pong!