From a features perspective, I agree. The amount of content it has is great, and you can play it all online, LAN or split screen. Campaign, Forge, MP, Firefight, custom games. It has a great unlock system that isn’t tied to gameplay in any modes. Has full customisable armour that you can see in all modes. All these are what has made Halo Reach last as long as it has. These things are why there’s still a big community still playing.