Alright, 1) itch.io didn't really notify me there were new comments so I apologize for not answering back promptly 2) I think it's working on some level. It's super bare-bones but I have reached my goal...I think (let me know if you cannot see it in your browser)
Viewing post in Image Messaging Ghost jam comments
Can confirm. I'll go and try it on my desktop with 8 GB.
Edit. After clicking "Run game" (I have set the web based games not to autostart) my RAM usage jumps by about 2.5 GB (from 2.2 GB to 4.7 GB used). It goes a little higher still while the game is starting (mine peaked at over 5 GB used), but then settles back (at 4.5 GB used for me). It does like RAM!
Edit2. It does run though.