219
72% of devs believe Steam has a monopoly on PC games, according to study
(www.gamesindustry.biz)
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
Steam is naturally the only platform gamers care about because they're the only platform that acturally targers gamers, all other platforms target devs (except GOG who targets gamers that specifically want offline copies without DRM)