Son of a.... I've been playing around with this game for more than a week trying to get it to display properly and getting nowhere. This worked! Probably the only thing I didn't try was the "Check the disable display scaling on high DPI settings". Thanks, welwyn1, I got my Civ 3 back!

got win 10
added to conquest.ini KeepRes=1 works fine, widescreen and native resolution

None of these seem to work for me , i added KeepRes=1 to the .ini file. Then i did what you said with compatibility and it still doesn't work . I still get black bars on the sides when i'm playing.

Inexplicable - it also worked fine first time on a laptop I have with Windows 8. I'd make sure your display is set to its native resolution - and I found the KeepRes command didn't work until I put it on the last line of the ini file.

Originally posted by welwyn1:

After much tinkering to get this to run full screen in Windows 10 and a 16:10/ GE Radeon 900 graphics I hit upon the following - and it finally works - perfectly
Create a shortcut from the conquests .exe file on your hard drive
Go to properties - set compatibility mode for Windows 7. Check the "disable display scaling on high DPI settings".
Edit the conquests INI file - add the line KeepRes=1 (as recommended in other threads)
Start the program in steam (or the short cut).
NB - without the modified shortcut the KeepRes command didn't work.

It should be automatic!!!

Worked! Thanks!

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=548420101

This just makes the problem even worse; now not only is it not widescreen but the resolution itself is smaller. Just a tiny box.

I guess I'll just have to live with my pillarboxed Civilization, better than a windowbox.

Originally posted by thesaurusrex:

now not only is it not widescreen but the resolution itself is smaller. Just a tiny box.

Try to press Alt+Enter.
It's sounds like windowed mode (not fullscreen).
Can you show a screenshot pls?

This worked for me !!

Civ III widescreen display in Windows 10 fixed - maybe?
After much tinkering to get this to run full screen in Windows 10 and a 16:10/ GE Radeon 900 graphics I hit upon the following - and it finally works - perfectly
Create a shortcut from the conquests .exe file on your hard drive
Go to properties - set compatibility mode for Windows 7. Check the "disable display scaling on high DPI settings".
Edit the conquests INI file - add the line KeepRes=1 (as recommended in other threads)
Start the program in steam (or the short cut).
NB - without the modified shortcut the KeepRes command didn't work.

It should be automatic!!!
Last edited by welwyn1; 18 Aug, 2015 @ 1:36pm

Originally posted by thesaurusrex:

This just makes the problem even worse; now not only is it not widescreen but the resolution itself is smaller. Just a tiny box.

I guess I'll just have to live with my pillarboxed Civilization, better than a windowbox.

I had the same problem and it is in full screen : http://prntscr.com/edfvxh

In my case nothing happens. I changed everything that was said and... nothing...

Following these instructions exactly worked for me

Originally posted by Bill Flare:

Originally posted by thesaurusrex:

This just makes the problem even worse; now not only is it not widescreen but the resolution itself is smaller. Just a tiny box.

I guess I'll just have to live with my pillarboxed Civilization, better than a windowbox.

I had the same problem and it is in full screen : http://prntscr.com/edfvxh

That's windowbox. Mine is just pillarboxed, which I can live with.

thanks it works.... small box screen at startup once you enter the game its full screen display on my alienware m17r2

I'm late to the party, but I still wanted to thank you OP ! The game works perfectly now :)