EDIT: I have also made a fix for Unmasked.
https://i.imgur.com/1URvTjj.pngAs detailed on the WSGF report and PCGamingWiki page Scribblenauts Unlimited (Unmasked also, but it doesn't have a WSGF page) doesn't natively support aspect ratios wider than 16:9 and is Vert- so the menu gets cropped off. There's also a 60fps cap.
However, I made a fix for the aspect ratio with Cheat Engine. (This doesn't fix the letterboxing that occurs with thinner resolutions)
https://i.imgur.com/rjh1Jee.pngHere's how to use it:
1. Get into gameplay
2. Go to Options and make sure to choose a resolution with an aspect ratio 16:9 that's the same height as your monitor.
3. In Cheat Engine load Scribble.ct and click "Advanced options"
4. Select all the addresses, right click them, and click "Replace with code that does nothing."
5. Freeze all the height addresses.
6. Change the resolution to your monitor's native resolution
7. Set the width address in Cheat Engine to your monitor's native width.
You may have to go to another area or to the main menu and back to fix any visual bugs.
Here are most of the issues:
The world map is stretched
The HUD is still 16:9
Tasks that restrict your camera can be Vert-
Certain menu elements like fade outs, etc can be 16:9 in the middle or left of the screen
If you alt-tab while in fullscreen in Unmasked the width can reset to the previous one
I hope someone can make these fixes easier to use, and maybe even remove the 60fps cap.