Could Halo 1 Have Run on the Sega Dreamcast? It Turns Out the Answer Is Yes, and Now One Developer Has Proven It

A developer has successfully gotten the original Halo: Combat Evolved, a day-one launch title for the original Xbox in 2001, ported and running on the Sega Dreamcast – in both campaign and multiplayer. And they've posted 28 minutes of gameplay footage from the campaign and multiplayer to prove it.