After Shadows - SteamSpy - All the data and stats about Steam games

Steam Spy automatically gathers data from Steam user profiles, analyzes it and presents in simple, yet beautiful, manner. Steam Spy is designed to be helpful for indie developers, journalists, students and all parties interested in PC gaming and its current state of affairs.

News - PlayTracker Insight - a new website for tracking Steam owners (and more)

Shadow of the Night Steam Charts · SteamDB

Does non-linearity actually sell games better? - Try Evidence

Grey Alien Games » Blog Archive » Steam's discovery algorithm killed my sales

Linux Game Cast Podcast on Spotify

Diablo IV quadruples its launch numbers on Steam by peaking at over 23k concurrent players (with nuances)

Stats and Achievements (Steamworks Documentation)

Steam Now Features Real-Time Charts - Gameranx

Thoughts on the Idleverse v2.0

Epic Games Store being developed by Steam Spy founder, Sergey Galyonkin - , We Make Games Our Business