Sorry, by "bringing together" I mean push them into each other like you do with the other objects. It work if they run into each other too, but they don't naturally try to do that unless they are fighting.
All of my officially published games are here on Itch! Some of the most recent updates for my ongoing projects are currently available on SubscribeStar, but those will all come to Itch eventually. There's a bunch of smaller or incomplete games and experiments that I didn't upload anywhere, all that exists of them on the internet are some screenshots, but they're not worth publishing.