Answer
Yes. The official Roblox description calls Piggy: Intercity a multiplayer open world RPG.
Yes. Piggy: Intercity is a multiplayer open world RPG on Roblox.
Playing with others does not remove survival planning. You still need food, water, healing, weapons, route knowledge, and safe exits.
If you are joining friends, use Roblox’s normal server or friend-join flow from the official game page.