It's not finished (there are a few features I want to add) but it's playable.
Play here: 2048 game
Quick question, ZIM masks everything outsize of the defined Frame (e.g. 800 by 600). Is there an easy way to show display object that extend outside of this area).
FULL mode rather than FIT mode then handle the scaling yourself. Or depending, FILL mode is there too to try which fills the screen with your aspect ratio.
So, you could switch to FULL mode and put your whole game in a container called holder that has the same width and height as your current stage. Then scale it to the stage and center it and it would be just like the FIT mode but you can still use ZIM outside that area as it is in FULL mode.
This works great Dan. The only minor issue I have is resources that use Three with ZIM. The 3D objects don't scale and position. No big deal I can keep these resources using "fit" scaling.