Open Teeworlds, press ENTER various times even if you can't see the screen.
After that press CTRL+SHIFT+Q. You should be back on the Windows interface.
Press The Windows key and type %appdata%. Press ENTER
On the explorer Window look for the Teeworlds folder
Open the file settings.cfg with Notepad.
On the file, look for gfx_screen_width and change the value to 1360
Next, the next line should be gfx_screen_height. Change it's value to 768
You should have this text on the end:
gfx_screen_width 1360
gfx_screen_height 768
You can change it to 1080p later if you so desire.
Save the file and try to open Teeworlds again.
If it worked, great! If not, change the res. again to some other res. you think would do the trick.
Playing Teeworlds since 2011!"I will always be topless for you" - Günther Branlutte