Steam
Steam Forums
https://steamcommunity.com/discussions/forum/10/3488626756873345288
!share only one game (not library)
!indicate what is included in the deluxe and other editions of games
!sorting friends by games
!guides not for only one, buy for few games

Steam Deck
Steam Forums
https://steamcommunity.com/app/1675200/discussions/2/3472864793308328605

Diablo IV
Steam Forums
https://steamcommunity.com/app/2344520/discussions/2/4040356398515057863/

Blizzard Forums
https://us.forums.blizzard.com/en/d4/t/131245
https://us.forums.blizzard.com/en/d4/t/132978
(answered)

The Division 2
Steam Forums
https://steamcommunity.com/app/2221490/discussions/0/5371139102166376841

Warhammer 40K: Darktide
Steam Forums
https://steamcommunity.com/app/1361210/discussions/0/3716062978738754728
(solved)
https://steamcommunity.com/app/1361210/discussions/0/3727324132819666351
(no answer)
https://steamcommunity.com/app/1361210/discussions/0/3878220223857358311
(closed by devs, proofs upon request)

Fatshark Forums
https://forums.fatsharkgames.com/t/55870/43
https://forums.fatsharkgames.com/t/71989
https://forums.fatsharkgames.com/t/72358
https://forums.fatsharkgames.com/t/72362
https://forums.fatsharkgames.com/t/72686
https://forums.fatsharkgames.com/t/73906
https://forums.fatsharkgames.com/t/80776
https://forums.fatsharkgames.com/t/80812
https://forums.fatsharkgames.com/t/81276
https://forums.fatsharkgames.com/t/83889

Euro Truck Simulator 2

Warframe

Fallout Shelter
- about ads timer bug in iOS
- add function for Mr. Helper not to engaged into battle, only run out of battlefield
- add cross sync of pc/android/iOS
- update game in all platforms to the same version

Fallout New Vegas
Steam Forums
https://steamcommunity.com/app/22380/discussions/0/4362374548287330769/

Fallout New Vegas PCR (RU)
Steam Forums
https://steamcommunity.com/app/22490/discussions/0/4364626769113154792/

Useful sites for Steam

1. https://www.steamgriddb.com/ - wallpapers and icons for Steam games.
2. https://steamdb.info/ - database of everything that is in Steam.
3. https://www.steamcardexchange.net/ - game icons and their levels.

Useful Steam Links:
1. https://store.steampowered.com/replay/ - Your Annual Steam Stats.

Games Not Displayed in Store:

View your posts/replies to posts:
https://steamcommunity.com/id/ Steam ID /posthistory

View your comments:
https://steamcommunity.com/id/ Steam ID /commenthistory