It’s been a while since the last post; however in the interim I’ve been working on a platformer, named (for now) “Platform 2”.
It has a level builder, local multiplayer and a selection of levels to demonstrate what it can do.
Find it at https://invincitech.com/p2/.
Don’t forget to look at the document for the level builder at https://invincitech/p2/builder/docs.html if you try to make a level.