This would mirror the release of the original Fallout: New Vegas following the debut of Fallout 3, though Obsidian may be allowed to use Unreal Engine instead of Bethesda’s Creation Engine 2 ...

It had a huge effect on sales of the existing games but there hasn’t been a new one since online spin-off Fallout 76 in 2018, and it’s been a full decade since Fallout 4.