KTOMG is super awesome!
The only thing missing is the ability to let your buddies add you as a 'friend'. If you add a friend, you could let then set permissions on a List to allow friends to collaborate and add games :D
You could then see which friends have played the games in your various lists and or friends lists.
Basically, if we can invite friends to the site, we probably want to follow each other and follow each others lists to some extent (assuming the permissions are set appropriately)

Our use case is as follows:
There's a group of us that do Game of the Year videos and we want to keep up-to-date with what we think are contenders. You could then see who has played the game or completed the games. From there we would start discussions or at the very least 'rate' a game on a 1-5 star basis.

There are softwares like the one that the site Can i run it and Game Debate uses, what you think about to implement them? I don't use them because i think is too limited, one have one thing that the another one don't have, for exemple Game Debate have a advanced rig/equipment thing(the ENTIRE computer xD), but they don't have a good game database, the Can i run it have a good database but don't have an advanced computer setup like Game Debate.

And this is the only game site i use, it would be good if it have more functions, it's boring having account on various websites...

thanks for the attencion

Right off the bat, let me acclaim that KTOMG cares more about user feedback compared to the competition.

The 2016 DEC update saw the introduction of "Abandoned", "Completed" and "Mastered" statuses. It goes without saying that "Completed" and "Mastered" can be traced back to Backloggery's Status Guidelines.

http://backloggery.wikia.com/wiki/Status_Guidelines

But I protest against them both. They are exceptionally tough to fulfill if you are honest with yourselves.

100% Completion?

Hardest Difficulty - checked?
Collectibles - checked?
DLC - checked?
Achievements - checked?
XP Progression - checked?

Mastery?

Speed Run - checked?
No Damage Run - checked?
Knife-only / Pistol-only Run - checked?

It's cool SOMEBODY manages to fulfill 100% Completion or Mastery but I don't believe the average gamer has 100% Completion or Mastery on their radar.

May I suggest the substitute? The DOMINATED Status!

"Dominated" goes beyond "Beaten" without the craze of 100% or Mastery.

Let me put an example: I have almost completed Call of Duty 4: Modern Warfare campaign on Veteran Difficulty. Goddamnit, "Mile High Club"! Nevertheless, it is still a feat.

Due to "Mile High Club", my progress does not qualify as "100%" or "Mastery". But it definitely qualifies as "Dominated".

Thank you for your consideration in advance!

This would be a special category; any games marked as ignored will no longer show in the All Games section, and you would have to go to the ignored section to see them. For me, this would include games I got in a bundle that I have zero intention of playing, free games that I tried and didn't like (but still show up in my Steam list and would therefore sync to KTOMG), and software from Steam that shows up. I realize a lot of people wouldn't need this, but for those of us who like to micro-manage our things, it would be extremely useful.