And Barone wasn’t exaggerating when he said it was hidden. To access it from the mobile version of the game’s title screen, players must perform a sequence of taps to specific leaves on the Stardew Valley logo, then push a different button. (You can find the detailed steps on the game’s website or pasted below.) Doing this correctly will add a co-op button to the title screen. Barone said the mobile multiplayer feature works “pretty much the same as on other platforms,” except that there’s no way to “discover” other people’s farms. You can only connect via IP addresses, he said — so you’ve got to use the same local network or create a hotspot.
Barone said the ideal way to use the multiplayer mobile mode is to host a farm on a Windows PC, then access that farm through mobile using the same IP address, via Wi-Fi. Barone said the worst case scenario is likely connecting to a farm hosted by someone using a hotspot for everyone to connect to; the app can be “interrupted repeatedly” by lost service spots or calls, making the experience frustrating.
“However, if you want to try these things out, there’s nothing stopping you,” Barone wrote. “Just be aware that there are inherent connectivity issues that can arise when attempting to host a multiplayer game from a mobile device.”
If you’re looking to access multiplayer on mobile, here’s how to do it — straight from Stardew Valley’s website:
For iOS: Settings -> Wi-Fi -> Click the (i) next to your Wi-Fi name -> Look for “IP Address”
For Android: Settings -> Network & internet -> Internet -> Click the cog next to your Wi-Fi name -> Look for “IP address”