Microsoft is having a good time on Steam right now, with a number of its game in the top-sellers list.
Obsidian's Grounded is in fact the top-selling game on Steam's platform - at the time of this article's publication. Perhaps that isn't surprising given the game has seen over one million players in the first 48 hours of release.
The second top-selling game on Steam is another Microsoft game - this one not yet out. Microsoft Flight Simulator, which Martin is currently into in a very big way, is currently flying high on Steam.