They are fundamentally different experiences. WoW is an **MMORPG** — Massively Multiplayer Online Role-Playing Game. A persistent internet connection and active subscription (or Game Time) are **mandatory** to log in.
But you are always connected: Trade chat, economy (AH), world PvP (opt-in), other players phasing in/out.
| Feature | Solo (Online) | Offline Mode | Group Content (M+/Raid/PvP) |
|---|---|---|---|
| Internet Required | Yes | No (App only) | Yes |
| Character Progress | Full | None | Full (Shared) |
| Social Interaction | Optional (Chat/AH) | Chat Only | Required (Voice/Coord) |
| Endgame Gear | Limited (Crafted/World/Delves) | No | Best (Mythic Raid / Glad PvP) |
Verdict: If you want a true single-player RPG in Azeroth lore — play Warcraft III: Reforged (Campaign) or wait for a hypothetical offline mode (unlikely). WoW's design *is* the multiplayer world.