Anygames worth playing?

Really depends on your preferences, but strategy games can be quite time-consuming in a good way. I lost several hundred hours (minimum estimate) for Civ 5 so you can definitely try that if you haven't already. Hearts of Iron IV for those with more real-time strategy flavour, albeit with pausing mechanic.

^And this too. Even thought it's a shooter, it's very dynamic and offers a fresher flavour compared to CSGO. If you don't want sink too much time into it, buy starter edition. If you do want to, starter edition is still viable. Don't listen to those that says it sucks.

I love searching for free games, and sometimes I find some pretty good ones in Steam. Personally I can recommend:

Horror: A Date in the Park, Close Your Eyes, Freddy Fazbear Pizzeria Simulator,Ultimate Custom Night;

Point and Click/Adventure: Heroine Quest the Herald of Ragnarok, The Bottom of the Well;

Action/Plataformer: Khimera Destroy All Monster Girls, Pink Heaven, Pink Hour, Princess Remedy in a World of Hurt, Super Crate Box, You Have to Win the Game.

Multiplayer: Brawlhalla, Realm fo the Mad God.

RPG: The Desolate Hope.

Hope someone likes them as I do!

If you want to feel absolute nostalgia :3 I would reccomend playing the Epic Battle Fantasy series or Mardek and possibly other games by those creators. If you want Comedy, I'd reccomend the Medieval Cop series. BTW all of these series are on kongregate.

Or PUBG on steam that's worth playing games

There are a few games that are completely worth playing.
for new games: the witcher 3, fortnite and pubg, just cause 3, planet nomads

old games: kingdoms of amalur reckoning, race driver grid 2, skyrim, elder scrolls online

i have tried these games and they are completely worth playing 

Literally any Elder Scrolls game but The Elder Scrolls Online.

Gothic 1 & 2 if you like older games

Space Station 13

NGU IDLE

any of the elder scrolls or fallout games are great fun.

Hello you can play games from steam for free or paid ones i don`t know your taste but i also like mobile games one i play is called     Mobile Legends 
for pc games i like GTA 5 ,FALLOUT 4 , CS:GO,FARCRY 4-5 ,SKYRIM,ETS2 ,ATS,FORZA HORIZON 3 AND 4,THE CREW ,THE CREW 2,PUBG,FORTNITE

Path of Exile. It's an ARPG like Diablo 2, it's completely free(you can buy cosmetics and stash space, which is not neccesary), receives expansions every 3-4 months (also completely free, none of this diablo 3 expansion bullshit). It is incredibly deep, after thousands of hours played I still don't know everyting about it.

It's not free, but I would recommend Neverwinter Nights to everyone who likes RPGs.
Not only for the game itself.
There is tons of extra stuff (including epic adventures) you can download for free, and for those who like multiplayer, there are some servers that are still active.
 

If you're into idle games, and I'm not really much of a fan of them myself, I recommend  War Clicks. It has a lot more features than the standard 'click - click - click - repeat' idle game fare!

There is a free version - Neverwinter Online (Ravenloft)  check it out at Arc Games