Steam Game Installation Conflict: “Synergy” Issue Explained | 4Gamers

A recent post on the Steam discussion board of the Reddit forum attracted attention. Someone discovered that there are two games with the same name on Steam, both called “Synergy”. As long as they are installed in sequence, they will overwrite each other because the folders and executable files have the same names, resulting in neither game being able to start properly. This has caused the player community to re-examine the design issues that have been used on the platform for many years.

The incident originated from a report by netizen maciej0s123. When he installed the city survival and construction game “Synergy” (official Chinese translation), he accidentally overwritten another “Synergy” that originally existed on the computer.

Although the two works have the same name, the actual content is completely different. “Synergy” is produced by Leikir Studio, the French development team of “Vietnam War Tactics”. It was launched in April 2025 and has received extremely high praise for its unique art and strict survival rules. Players explore ecology and pioneering in a strange world, and build settlements that can survive for humans.

Another free game called “Synergy” is a cooperative mode mod for “Synergy 2”. It was made by the Valve community and allows friends to cooperate to complete the originally single-player story. It has been continuously updated since its launch in 2005, accumulating more than 10,000 extremely positive reviews, and maintaining active community activities.

However, according to maciej0s123, when both games are installed, a folder named “Synergy” will be created under steamapps/common, and even the executable files are called “Synergy.exe/synergy.exe” respectively. Since Windows is not case-sensitive, the two will directly overwrite each other, resulting in neither game functioning properly.

Why does Steam have this problem?

Many players and developers discussed that the reason lies in the architectural design of Steam. Although Steam manages each game with AppID, the folder name is set by the developer.

If developers directly use the game name as the folder name, it may cause conflicts when the work of the same name appears. This situation was not a problem in the early days of Steam. The platform was originally designed to manage Valve’s own games (such as the “Thriller” series). At that time, it was not expected to become the world’s largest digital game store.

In comparison, platforms such as Microsoft Store, App Store, and Google Play will create installation locations based on unique IDs, so there will naturally be no duplicate folders.

The Reddit comment area shared a simple remedy for manually changing the folder name. Someone also posted a customer service response, and the other party only recommended installing the module in a subfolder. Netizens may also point out other games where the same situation has occurred (such as “Prey” and “Lords of the Fallen”).

Some players raised interesting trivia: the installation path name of more games on Steam is a dot “.”, and the data of these works will be directly thrown into the steamappscommon folder by the system instead of being placed in the game’s own folder.

The most common culprit that causes installation directory conflicts is WindowsNoEditor (the name of the default installation folder of Unreal Engine). As many as 54 games use this path. Others lamented that two “Synergy” games covering each other would not produce a synergy effect (Synergy, also known as a bonus effect)?

It is worth mentioning that the Proton environment used on Steam Deck or Linux will create independent folders for each game, so there will be no conflicts. This also makes some players find it difficult to install Mods in the PC environment.

Although the probability of overwriting each other between games with the same name is extremely low, this incident still worries many players. If a malicious developer uses the same folder name to cause damage, it may cause even greater problems.