No. Dungeons & Dragons is a Tabletop Role-Playing Game (TTRPG), fundamentally different from an Alternate Reality Game (ARG).
| Aspect | D&D (TTRPG) | ARG |
|---|---|---|
| Reality Layer | Entirely fictional shared imagination (theater of mind / minis). | Blends fiction with real world: websites, phone numbers, physical locations, real emails. |
| Player Role | Portray a character in a fantasy world. | Play yourself investigating a mystery in reality. |
| Platform | Table (physical/virtual), dice, sheets. | Internet, social media, mail, GPS, live events. |
| Narrative Control | GM + players co-create story in session. | Puppetmasters (designers) pre-write narrative; players uncover it. |
| Persistence | Campaign continues across sessions. | Time-limited event (weeks/months); ends when mystery solved. |
| Fourth Wall | Intact (magic circle of play). | Broken — game denies it's a game ("This is not a game"). |
Verdict: D&D = collaborative storytelling in a fictional world. ARG = interactive fiction bleeding into reality. Different genres, different magic.