How do you keep track all your games?

If a game gets revoked, you get a notification by Steam which has to be marked as read. So you can't really miss that. If a game only gets removed from the store, it doesn't affect owners. If you mean banned instead of removed, that's another thing, because the API doesn't list it anymore and websites like SG or ITAD can't track it. Then you can only verify by taking a look into SteamDB or library.

In regards of buying: check bundle threads here on SG with RaChart Enhancer to know what you already own, use filter on ITAD, SteamDB or last but not least take a look into your library first.
In regards of playing: use library categories, BLAEO or Lorenzo Stanco’s Steam Library Filters.

What exactly are you trying to keep track of? if you want to know where your games came from, you can view your purchase history, which includes key you've redeemed. Click on your Steam wallet amount in the upper-right corner and there will be the option "View purchase history" on the next page. I've never had a game revoked, so I don't know if those show up there.

A huge spreadsheet, plus Depressurizer. :D

If you want to have an idea of when you bought it, log into steam with the browser, and check:

https://store.steampowered.com/account/licenses/

From the dates you can often figure out where you got the game from, with the help of your E-mail (you often receive receipts!) or from Bundle dates.

I use this application called Steam. It serves as both a library for games for me and DRM for developers. It's great, check it out.

/s

I just keep a list of all my games in a text file. Every time I get a new game I add it to the list and when I complete a game I move it to a completed section where I rank it against all other games I have played. There is no order to the list, it is just the order I acquired them in. I only collect games I want to play, so I pretty much know what every game on the list is even though there is close to 1000.

Sometimes if I have nothing to do, I will go through the list of games and pick out the ones that I want to play the most and put them in another file called "games to play". Then I can look through that list to make it easier so I don't have to go through the main list every time. I will also sometimes use https://www.lorenzostanco.com/lab/steam/ if I want to find a specific type of game to play because you can use that site to search by tags or some other options.

Everything I need to play I "add to favorites" on Steam. Then I remove them from there when I'm done. The problems, of course, are that there are some games I'm never done with (Tales of Maj'eyal, Terraria, Duck Game, and all that stuff I play on a regular basis), and that new games are coming in there faster than I can finish them, so it's starting to get a little crowded.

I have my Steam library in a Google spreadsheet, including purchase dates and prices. I know to the exact penny how much I've paid for my games.

My answer is simple: I don't. Not in a fancy way at least. I just save the confirmation code receipt from Steam as a separate file with an explanatory name whenever I activate a game. That's it, nothing more. This provides more info than needed, if needed, when needed (exact name, activation date, origin, occasion or wtv I want to add in the file's name).

Buy game > add to spreadsheet, including date, price, bundle/collection if applicable, store, and any associated game keys
Get a game free > shake fist at self for not having already started tracking that on the spreadsheet and hope I can find where it came from later if I ever need to
Game added to bundle at a later date > throw myself off a cliff*

*On that note, I just finished exhaustively compiling all 199 bundles that I've gotten from Groupees since their first "Be Mine" game bundle in 2012 into the spreadsheet; any additional keys they supply will give a little notification on the Groupees web site, but for now I was finally able to click "Mark all as read" on that notification and not wonder if I was missing something. I've already done this with Humble. BundleStars/Fanatical will probably be next... and then Indie Gala... and then... all the other odd ones.

But if you mean keeping track so that I can find something good to play... I've taken the time to whittle it down to a list of just under 400 games I'm really interested in over on BLAEO, and then further whittled that down to a "must play" list of 26 for the year, roughly estimating how long it'll take to beat that many in one year based on the average length of a game. In Steam, I can click on the little "GAMES" or "RECENT" or whatever link next to the Search bar in the Library, and select my tags, and "The 26 (2018)" is one of my tags. So with a quick selection, I can reduce the visibility and overwhelming-ness of my library down to a paltry list of 26 games that continues to grow smaller as I beat them (I have 18 left to go for 2018).

Well, I've my Steam set in grid view instead of list (I like it better) and that allows me to have games with multiple categories but just appear once, so I have ALL my games on Steam (Steam games and non-Steam games) and have different categories for each and have the ones I like the most in favorites

So if I want to play MOBA I just search that and I will get LoL, HotS, Dota, Smite, etc
If I want to play Battle Royale I just type it and I will get H1Z1, PUBG, Fortnite, etc

I have everything in categories pretty much, and I have all my games from all the platforms or DRM-free or installed from discs on Steam and have Steam to organise it

I sometimes get lost in the games tho and I tend playing the same games because my library is a little full, but since I have it with categories, I can type "playing" and I'll get games I haven't finished so I remember
As for games removed from Steam, well that depends on you, I for example run the SteamDB free package each week to get all the F2P games added to my library, in case some of them get removed I can easily play it with the AppID.. If the game was paid and got removed, well I find out sooner or later and try to hunt it down as I like collecting games no longer in Steam (I even have a pastebin link on my profile saying which ones I want)

A few days ago I found out Mortal Kombat Arcade Kollection got removed a few months and I did a search, found a key and got it for example

I think if you organise the library at least in playing, completed (meaning, everything 100%), finished, in hold, and favs, you should be good, but you NEED to organise each game you get, otherwise you will have 1000 unorganised ones and you wont know what you have

Also, if you have it in list/detail view is annoying having the same game in more than 1 category, it will appear in all of them, that's one of the reasons I like grid view so much... I have games (like LoL for example) in 4 categories= Daily (games I tend to play on a daily basis), Non-Steam, MOBA, Ranked (games I should do ranked) and I have it in favorites.. Yet it only has 1 entry on my library (2 if you count the PBE which has its own Public Test category added)

Edit: I'm currently at 1500 games on Steam library, that counts all of my non-Steam games aswel in which I have even DOSbox or console emulators (on their respective category)

I don't.

An Excel spreadsheet.

There isn't much data there - name, platform, whether I've played it (and, if so, how long and a rating out of 5).

I also mark games which I have no intention of playing, and very brief descriptions of those I do intend to play, to make it easier to find my next game. Only 347 on my "to play" list...

i Just add a category to my steam library called "finished"

another called "crap"

I've created a few folders in my Steam Library such as "In-Progress", "Finished" and some genre related like "Cyberpunk", "Survival", etc. Though I'm sure no amount of organizing or prioritizing will help me get over my back log. At the rate that new awesome games come out and my current ~75% never played, I just have no chance.

Is your question regarding normal removal or malicious removal? Normally, Steam notifies you of revoked licenses. If they decide to go 1984 like Amazon, that's another story...

Keep track? I just put things in categories mainly around things I am actively playing now, open world/neverending games, games I'm psyched to try when i get time, or just games I'll get to eventually. Oh and a category for SG wins so I know to play those first!

I don't have any need whatsoever to keep track of what games are in the categories though, or try and remember all the games I have. I just use this site whenever I'm bored and can't find anything in my current list I want to play. The filters it provides makes it easy to narrow down on something I might want to play!

I don't keep track of my games, I play what I want to play and when I want to play. If I don't have a game I want I buy it, simple as that. 😁

I don't think anyone with 1000+ games keeps a track of their games. I collect games just for the fun of it. It became like a hobby to get those +1 in my library. And I usually only play AAA- games and all the rest I idle for trading cards.

I use Isthereanydeal.com
You can create a collection and add info about date of purchase, where you bought it, and organize in categories you can customize. And since you can also have a waitlist to know when games you want are on sale, it's a good way of tracking things about that too.

I use the sites Backlog Assassins (from the SG community) and HowLongToBeat as well as making a category for every genre in my library and sorting them all in accordingly. The games that are on my to-play list get favorited and usually fill up the first section of my client.

I keep a spreadsheet with all Steam purchases (title(s) | source | price | date | Steam profile link if trade | IndieGala bundle link from HH group buys) and a spreadsheet of completed games (title | platform | date | playtime | eventually extra columns with date & playtime for 100%/Dlcs/other).
Also have a list of games I'd like to beat this year and a list of short games I can beat in a day.

If I'm not sure whether I own a game, well I just use the seach feature of the Steam library.

I'm lucky to get all of my bundle purchases activated, there is no way I have the time to actually track anything. The best I do is favorite games I really want to play, so they all appear in one place.

Simple. I don't.

I use extra categories for the games I've finished or got all achievements in, but all in all I do not really. Finishing games just for the sake of it felt more like a chore than fun, so I just use these categories loosely as a reference what to play and what not. I also got them all categorized by genre and theme, with SG wins going straight into my favorites.

For leftover keys I use a simple Excel sheet, including stuff like site and/or respective bundle, so I can easily find them again.

I don't follow them. My main problem is that I don't even activate most games I buy. This started from the idea that if I end up deciding not to play them I could gift them, but ended up as a serious malady, where I don't even write the keys anywhere, so I've already lost keys when bundle sites and stores died.

I regularly think of buying games which I already have, but I do try to limit my purchases, and that helps.