This is not a full game, it's a half-finished prototype that is also malware. The client is insecure, many features don't work, and the documentation is frequently wrong.

To give you an example: There are two different "world map" views you can choose from. Both of them are extremely slow to load, often making you wait 10+ seconds before you can see stuff. (And then it has to load again every time you drag to view another area.) One of the map views doesn't allow you to see player-drawn visuals (which the documentation doesn't mention), which makes it unhelpful as you can't have your code display anything about what it's doing. The other map view does display player visuals, but does not display the correct room terrain; it seems to be rendering totally different rooms. It also doesn't show the location of any of my units, and for other players it displays their units in a color of their choice, which means if that player chose grey as their color, I can't see their units as they blend into the background. This feels like something someone threw together in a week and then shipped without any testing.

It's a shame, as I love the idea, and I've had fun playing around with it even despite all the issues. But it's been very frustrating trying to get anything to work when the documentation is so lacking; I just spent a while debugging a pathfinding issue, which turned out to be because the documentation claims that the built-in PathFinder module always finds the best possible path, but that was not true, it uses a heuristic that sometimes finds very inefficient paths.

Even worse than the in-game bugs are the client bugs.

First off, the game doesn't work on any version of MacOS that uses the new Apple Silicon chips. The Steam listing that says it's Mac-compatible is false.

Secondly, the client contains an XSS vulnerability that can potentially allow any player in the same server you're playing on to remotely take over your computer. They get full command-line access to the user account on the computer that has the Screeps client installed; they can read or edit any file anywhere on your computer, read your email, etc. This vulnerability is very easy to exploit, I tested it on myself and got it working in just a few minutes. This bug was reported more than 9 months ago, and has been completely ignored by the developers, despite having a simple one-line fix. This is flabbergastingly irresponsible, and it's only a matter of time before someone malicious uses this to steal private data or install ransomware.

As such, I can't recommend paying any money for this, nor even installing the client on your device if you don't know how to protect yourself from the XSS attack. It's a wonderful game concept, but the developers clearly don't care about delivering a quality product, and are willing to put up a deceptive Steam listing and put their customers in danger just to earn a few thousand dollars.

Edit: I see one of the game devs has replied claiming that no such vulnerability exists. You can easily verify for yourself that this is false, Github issue #162 has steps to reproduce.

Edit 2: The RCE vulnerability has finally been fixed after an article I wrote about it went viral. So the game is now safe to play.

This is not a full game, it's a half-finished prototype that is also malware. The client is insecure, many features don't work, and the documentation is frequently wrong. To give you an example: There are two different "world map" views you can choose from. Both of them are extremely slow to load, often making you wait 10+ seconds before you can see stuff. (And then it has to load again every time you drag to view another area.) One of the map views doesn't allow you to see player-drawn visuals (which the documentation doesn't mention), which makes it unhelpful as you can't have your code display anything about what it's doing. The other map view does display player visuals, but does not display the correct room terrain; it seems to be rendering totally different rooms. It also doesn't show the location of any of my units, and for other players it displays their units in a color of their choice, which means if that player chose grey as their color, I can't see their units as they blend into the background. This feels like something someone threw together in a week and then shipped without any testing. It's a shame, as I love the idea, and I've had fun playing around with it even despite all the issues. But it's been very frustrating trying to get anything to work when the documentation is so lacking; I just spent a while debugging a pathfinding issue, which turned out to be because the documentation claims that the built-in PathFinder module always finds the best possible path, but that was not true, it uses a heuristic that sometimes finds very inefficient paths. Even worse than the in-game bugs are the client bugs. First off, the game doesn't work on any version of MacOS that uses the new Apple Silicon chips. The Steam listing that says it's Mac-compatible is false. Secondly, the client contains an XSS vulnerability that can potentially allow any player in the same server you're playing on to remotely take over your computer. They get full command-line access to the user account on the computer that has the Screeps client installed; they can read or edit any file anywhere on your computer, read your email, etc. This vulnerability is very easy to exploit, I tested it on myself and got it working in just a few minutes. This bug was reported more than 9 months ago, and has been completely ignored by the developers, despite having a simple one-line fix. This is flabbergastingly irresponsible, and it's only a matter of time before someone malicious uses this to steal private data or install ransomware. As such, I can't recommend paying any money for this, nor even installing the client on your device if you don't know how to protect yourself from the XSS attack. It's a wonderful game concept, but the developers clearly don't care about delivering a quality product, and are willing to put up a deceptive Steam listing and put their customers in danger just to earn a few thousand dollars. Edit: I see one of the game devs has replied claiming that no such vulnerability exists. You can easily verify for yourself that this is false, Github issue #162 has steps to reproduce. Edit 2: The RCE vulnerability has finally been fixed after an article I wrote about it went viral. So the game is now safe to play.