This is the link to the plugin you mentioned which is supposed to avoid the manual syntax updates but I haven't had the need to try it, like you said, most of the times the changes are trivial enough (https://docs.scala-lang.org/scala3/guides/migration/scala3-m...).
> An example of one of the programmable games in action
This comes handy to me, looks cool! For one or another reason, I ended up in this page which seems to intend hosting the same app but it doesn't work, just wanted to let you know (https://www.wbillingsley.com/lavamaze)