Does How to Fish Support Crossplay?

How to Fish has no verified console-to-PC or mobile-to-PC crossplay at present. The released store version is for Windows on Steam; a Steam Deck player remains inside the Steam ecosystem and can use Steam friend invitations, which is not proof of cross-platform console support. ^{[01] [02]}

What currently works

The official listing confirms single-player and online co-op on Windows. Community testing reports that desktop and Steam Deck users can join through Steam. There is no independently released PlayStation, Xbox, Switch, Mac, or mobile edition in the material reviewed here, so there is no genuine platform pair on which to verify broader crossplay. ^{[01] [02]}

This is an Unknown, not a permanent “never.” If another platform launches, the answer must be checked again against official release notes and live matchmaking. Controller support on a PC also does not turn the PC build into a console version. ^[01]