Valve Corp does not give out much information regarding the millions of people who use its digital game platform, Steam, and that makes it difficult for developers and marketers to get a handle on the way people buy and play their games through it.

A few third-party tools have popped up in the last few months to address this issue, including Steam Spy, which uses publicly available Steam profile information to measure statistics such as how many people play certain games, where those people live, and how long they play.

In an article for Medium that was originally published by Making Games, Steam Spy creator Sergey Galyonkin dug deeper into the demographics that make up Steam’s users and how exactly they spend their money.

“Let me start by saying that there are a lot of stereotypes about what people from different countries are playing and what genres they do prefer,” Galyonkin wrote. “Most of those stereotypes, as it turns out, are true, at least when it comes to purchasing and usage patterns.”

“You might find unexpected audiences”

According to Galyonkin,  Steam’s largest user base is in the U.S., with Americans representing over 22.5 million of Steam’s users. Galyonkin said this statistic is “not surprising,” but he cautions marketers not to focus all of their attention on the U.S., especially for the types of games that appeal more to certain audiences.

For example, Galyonkin points that the Russian audience, which accounts for over 13.6 million Steam users, is more likely to play games set in World War II or in a post-nuclear apocalypse, especially if those games are priced cheaply or are free-to-play. He also notes that German gamers have a preference for simulation games, and Japanese gamers like zombies.

“You might find unexpected audiences for your game in some smaller countries,” Galyonkin wrote. “Never limit yourself to an English-speaking audience — while undoubtedly large, it only accounts for less than a third of all Steam users.”

Galyonkin provides insights into other statistics behind Steam games as well, including information on player gender, game genres, and Early Access. You can read his full article here.