Just played the game for the first time today after buying it and I have the same issue. All I can find is people saying to (1) turn off the second monitor [which is not a "fix" and it sucks because I usually have Discord and YouTube and a bunch of other stuff going on that side, esp for a multiplayer game] or (2) download a third-party software to manage it [which I would obviously rather not do if I don't have to].

I was really excited to play this game, and I still will give it a try because it looks great. But it's a disappointing inconvenience. And it must be something in this game, because I don't have the problem with any other game using my same setup. I hope it gets fixed at some point.

Sorry this isn't a great resolution.

I too am having this issue, and the game is fairly unplayable with it as you constantly move your mouse around and click. I love this game greatly and was really excited for the Humble dlc, but until this is fixed I don't think I can play.

And I will not get a third-party app to solve this as that's not a fix, that's a workaround for a bug. I truly hope they fix this soon.

It is still an issue. I don't know if the Devs are working on it or not. I'm not sure why this is happening. I've been playing this game for awhile and never had this problem. I have had to stop playing it out of frustration, which sucks cause I was almost to the point of all the new additions.

Somewhat interestingly I don't see this problem with Planet Crafter or any other game I have installed, except a month or 2 ago I went back to a different game I hadn't played in a little while that previously didn't have this issue, but now it does have this issue regardless of whether I have the game displayed on either or both monitors, and whether I change the in-game options between fullscreen or windowed.

Weirdly, the only thing that's changed since I previously played that game, other than the obvious plethora of Steam updates, is that I replaced my video card and switched from using a pair of DVI cables to connect the PC to the monitors to using a pair of displayport-to-hdmi cables.

Now I'm not sure why a change of monitor cables would make any difference, but it kinda makes me wish I could go back to using the DVI cables, if only to test the theory. It also makes me wonder what, if any, changes might have happened for the rest of you between the game working as intended and suddenly/randomly not.

yes, thank god.. locked mouse would be so annoying, I like it like this.

So an update on my last comment...I restarted my computer and did an update and suddenly the problem isnt there anymore. The game is working fine now. I have no idea what happened.

Do you guys have a game controller connected to your pc? If so this may be your issue. It was with mine.

This thread was quite old before the recent post, so we're locking it to prevent confusion.