Unfortunately, Halo 5.
I can remember playing Halo CE way back when it was released in 2001. I had come from playing a PS2 and Timesplitters and remember hating Halo at first. It was maybe a year or so later a bunch of friends hired out a room, brought two massive TV's and we played 4v4 CTF on Blood Gulch all day. It was epic. And that's what made me go back and try Halo again.
The first halo I ever played was halo reach. Back when everyone had an xbox 360 My brother always wanted me to play with him because he didnt have xbox live gold most of the time and he got bored of playing alone. We played a lot of survival and campaign (sometimes custom games too but It was more like target practice on me because I was very bad at the game lol)