Here’s the catch: Stardew Valley multiplayer requires all players to have the same game version and typically LAN or online connectivity. A portable USB copy will work for online co-op if it bypasses Steam/GOG Galaxy, because the game uses those platforms for matchmaking.
Running a game from a USB drive introduces latency. Here's how to minimize it: stardew valley unblocked portable
It can run on aging school laptops or basic office PCs without causing the fans to roar. Here’s the catch: Stardew Valley multiplayer requires all