This means that if you'd like to keep a version of the game where it's still playable, I'd suggest backing up a copy of the current version! This is possible no matter where you bought the game from, even Steam (Just open the game's options and click Manage > Browse local files).

In version 0.4 only the camping field trip will be available. I have some cool plans to revamp field trips yet again that should make them a lot more interesting and a lot more fun! Once I'm done with that, the farm will return alongside a new camping field trip.