Even Halo jumped in on the crossovers : r/Doom

The Street Fighter 6 Hype Proves the Franchise Is Bigger Than Fighting Games

Upcoming DC Comics June 2021 revealed: Infinite Frontier and more

Halo is Infinite, DOOM is Eternal - me (SFM) : r/halo

They Made a REAL Halo and Doom Crossover

HALO x DOOM (? : r/halo

Since we already had one with Animal Crossing, what other franchises or media would you like to crossover with the DOOM series? : r/Doom

What if there was a doom eternal and halo infinite crossover : r/Doom

Halo: Fireteam Raven (Arcade) - The Game Hoard

Who would win, Atriox (Halo) vs Doomguy (Doom)? - Quora