You can copy your freeplay setups to your clipboard and import them, it's a great way to share! I'll start with one of mine I used when making the release video for 0.212:
Copy that to your cliboard, choose "Import" from the freeplay setup screen, and you can play Island Nation, my relaxed black ant freeplay setup. I like this one because most difficult stuff is disabled - I don't have to pay full attention to it if I'm doing other things.
Island Nation;Spikes difficulty - help your humble black ant colony take over the island. Setup meant for relaxed casual play - most difficult creatures have been disabled. ;1;0;1;0;2;0.251479;1;0;0;0;0;0;0;1;2;1;0;0;0.0;1;1;1;1;0;1;1;1;1;1;0;1;0;1;1;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
Copy that to your cliboard, choose "Import" from the freeplay setup screen, and you can play Island Nation, my relaxed black ant freeplay setup. I like this one because most difficult stuff is disabled - I don't have to pay full attention to it if I'm doing other things.