I'll review each installment of the series but if I had to sum it up as a whole. I'd say it's not my bag of chips in general and I find it slightly overated but I do love a few
Halo Combat Evolved: Me and my friend used to play this one split screen, it paved the way and rewrote and popularized the FPS genre. It's as essential and ground breaking as you can get. It's age has shown but it is amazing.
Halo 2: The best Halo I have ever played and one of the best FPS ever made imo
. I truly love the plot, the combat and the guns. It took everything the 1st had and passed it by a mile.
Halo 3: Something always lacked for me, I know this is the one people love the most but it wasn't as good as 2 imo. It's definitely a great game but I never got hooked on the plot and too many good 360 games were out that distracted me at this time. Specifically COD when it was at it's peak.
Halo Reach: Better than 3 imo and my favorite of the tradition Halos on 360. It had a different lane and utilized it's uniqueness well.
Halo Wars: I love the strategy based games and this is truly a breath of fresh air for the franchise. I remember everyone being torn when it first came out but I wouldn't mind trying this one again or maybe the new Halo Wars 2.
I haven't played the others so I can't judge those