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Steam hits 37 million concurrent users today
(lemmy.ml)
Steam is a video game digital distribution service by Valve.
Steam News | Steam Beta Client news
Useful tools:
SteamDB
SteamCharts
Issue tracker for Linux version of Steam
I got invited
Do you If I accept it and install the game if I will be able to invite other people or do I have to play for some time?
You can immediately invite your while friends list as far as I can tell.