4. Flan's Mod
Flan's Mod doesn't add anything to the game by itself, but it does allow you to add a number of new items using compatible content packs. WW2 enthusiasts can build their very own collection of tanks, fighter planes, bombers and a huge amount of weapons to wreak havoc with across Minecraft. Mass Effect fans can add a number of weapons from the ever popular Sci-Fi RPG to their game while Halo fans have the option to add a whole bunch of UNSC inspired weaponry, with vehicles and Covenant gear coming soon. Some of the packs are compatible with multiplayer so you and your friends can take the fight to the skies with your very own Russian fighter planes or take part in a spot of trench warfare with a host of ranged weaponry. The amount of content available for this mod is astonishing with more content being added all the time, so if hitting zombies over the head with a pointy stick just isn't doing it for you anymore this mod might be just what you need. If you're looking to spice up your arsenal then this mod and all of the content packs I mentioned can be found
here.