Hello,
First timer here but I have some basic knowledge of AGS. I have searched and found a couple resources regarding custom resolutions but wasn't sure if 480x300 was a possibility.
I am wanting to make my resolution bigger than 320x240 but didn't want to make the jump to 640x400. Is there any resources that would allow me to make a game in this custom resolution of 480x300? Thanks for your time.
No, AGS supports 800x600 and 1024x768 in addition to the two you mentioned, and there are custom builds out there for higher/widescreen resolutions (1280x720).
480x300 is as non-standard as it gets, and you couldn't run the game in fullscreen mode either, even with filters, afaik.
What you can do though is create a 640x400 game and simply use room backgrounds with borders. Add a non-clickable black GUI with a 480x300 hole in the center, and it will cut off any character, object or other GUI that gets drawn outside.