itch.io

If the source code for the game is in this Lisp-like language you've made and you provide the compiler (preferably as source code) then it should be fine. If Fennel (one of the least Lispy Lisp-like languages I've seen) is okay, then this should be too.

For binary distribution I would recommend supplying a cartridge ROM image if possible, since that appears to be the easiest to run in the VICE emulator. Disk images seem to be pretty easy to load too, but you should provide instructions in either case since the process is not completely obvious.

I wrote a really long comment, then I clicked post but it didn't post, I refreshed and now it's gone, so I'll just summarize what I wrote.

I can't vote on games because I failed to submit a game in time. The game was quite fun, especially the grapple mechanic. I accidentally clicked out of the game window a lot, this was the biggest flaw of the game for me.

As a game, it's pretty good. As a Lisp game, I'd say it fails due to being written in a fake Lisp (Fennel, just S-Expression-like syntax around Lua) with some parts just being plain Lua.

I can't speak for the host, but there's usually no theme to these.