If you've been frequenting the forum or keeping track of game news in-general, you'll see that the popularity of the Fallout show on Amazon has been a huge success to the brand across the board. With it blowing up interest in all of the titles and attracting a new audience of fans (along with enticing newbies with a free next-gen update for F4). This is on top of how well the series had cross-promotion across other brands in merchandising and food. It has been a success across the board and just a good example of what bringing an IP to another format can do for gaming.
This brings me to Halo and how terrible the cross-promotion was for it (which is odd in hindsight as MS were the masters of marketing for Halo 2 & 3). The series premiered on paramount plus and the only cross promotion was some emblems for Halo Infinite after the fact. It was just a thing that happened rather than the event Fallout has been.
Now granted, some of this could be chalked up to the quality of the show or it being stuck on Paramount+ which isn't as popular as Amazon Prime. Regardless, the contrast between how both of the shows launched and the reception within the same company is just rather crazy to see.
This isn't me saying every gaming show needs to do this, but there are obvious perks for it and it's just interesting to see a large IP like Halo just come and go show wise while Fallout will likely continue to go strong even with no new games on the horizon.
TL;DR - The success of the Fallout show and how Bethesda planned numerous activities around it really highlight how poorly handled the Halo show was in drawing interest to the game itself.
