Medal of Honor is another FPS series that stands out. Set in WWII, Medal of Honor: Allied Assault is the closest example to the original Call of Duty game. Allied Assault has a bit less story than Call of Duty, in that there are no attention-grabbing characters or a real cohesive plot. Rather, the game lets you fight through different missions/levels, which are each unique in some way. Being able to switch through various vehicles and weapon sets is something that is particularly unique for Allied Assault. While it is a rather short game, there is quite a lot of unexpected content for players to run through in each level.

Call of Duty and Medal of Honor: Allied Assault both focus on the same kind of gritty FPS style that many players love. Arguably, Call of Duty came out after Allied Assault, which means Call of Duty tried to improve upon areas where Medal of Honor had fallen short. Yet, while Allied Assault doesn’t have quite as much narrative or character focus as Call of Duty, it’s still a great game to play through.

Battlefield: Bad Company 2 is one of the most realistic FPS games, mostly due to its improvements in environmental destruction. This aspect alone made the game more unique, allowing for every scenario to be different. It enhanced the already excellent single-player campaign and the immense multiplayer competition already known in the Battlefield series.

Bad Company 2 boasts much better graphics than the original Call of Duty, which allows players to enjoy the game even more. Combined with the tactical destruction of buildings and other objects in the warzone, Bad Company 2 gives people a much more realistic taste of an FPS war game. That being said, it still embodies the same two main aspects that made Call of Duty popular in the first place – a strong campaign and multiplayer options – and it follows basically the same formula, ensuring that you will enjoy Bad Company 2 if you like Call of Duty.

The newest game on our list, Titanfall 2 is also the only to include anything other than just straight warzone combat. This game takes the same formula and ideas from Call of Duty, and adds a mecha element! Pilots and titans fight together to give players the opportunity for large-scale warfare. Titanfall 2 is the result of taking two different ideas and combining them into one big, beautiful, adrenaline-packed game. With a variety of different characters, a gripping single-player campaign, and active multiplayer modes, Titanfall 2 is an excellent take on the original Call of Duty’s systems.

Although Titanfall 2 seems quite different from Call of Duty, it actually only differs in setting and the scale of fighting. As much fun as commanding a giant titan is, when it comes down to it, Titanfall 2 has the same basic mechanics and ideas that Call of Duty is known for. So if you’re looking for a more futuristic Call of Duty on a larger mecha scale, Titanfall 2 is for you!

In another venture into sci-fi warfare, Killzone 3 offers a unique experience for an FPS game. Players fight against the Helghast army in an emotional single-player campaign, or join in on the multiplayer fun with their friends. This is yet another gritty shooter with a twist to interest fans of FPS.

Killzone 3 is another game closely linked with Call of Duty because of its main systems of single-player/multiplayer setup. However, Killzone 3 takes place in a different setting, and also is geared toward more mature players than Call of Duty. That being said, if you get the chance to play Killzone 3, you definitely should! Although the multiplayer servers have died down quite a bit since the game’s release, you can still get a good feel for what this game is all about by playing the campaign!

For fans of Call of Duty’s storyline, any of Tom Clancy’s games are sure to peak your interest! In particular, Tom Clancy’s Rainbow Six: Vegas is one of the most interesting games to play, with a competitive level setting in Las Vegas. Rainbow Six: Vegas stands out because of its realism, setting the game in a place many people might be familiar with. In addition, as is true of all Tom Clancy games, the weapons are accurate to real life and require more skill than just point and shoot.

Rainbow Six: Vegas does have a lot more realistic content to offer than Call of Duty, especially in terms of weapon options. However, this also makes it more of a challenge than Call of Duty. While Rainbow Six: Vegas offers the same kind of warzone feeling with similar modes of combat, it contains more of a mature and hardcore feeling than Call of Duty. For fans seeking a fun challenge, this game is for you!

If Call of Duty’s multiplayer modes were your thing, then Counter-Strike: Global Offensive is the game you should be looking at! Commonly known as CS:GO, this game was created by Valve to be a teamwork-building FPS mostly played online. The weapon mechanics are balanced to perfection (with occasional updates helping immensely), and the gameplay is insanely fun. CS:GO is arguably the best competitive FPS games out there today, with its tournament viewership frequently comparable with that of the infamous League of Legends. While CS:GO doesn’t offer much in the way of story or character interest, it can give you a great multiplayer experience, if you’re willing to work at it.

Despite not having the in-depth campaign storyline that Call of Duty offers, CS:GO’s multiplayer games more than make up for any losses. CS:GO is a difficult game, but it can be made easier through the right teammates, weapons suited for your play style, and plenty of practice. Players who found Call of Duty’s multiplayer fights too easy will love the challenge, and the ease of pairing up with your friends in CS:GO is far ahead Call of Duty’s servers. However, no amount of balanced weapons in game will make up for skill level – in this, Call of Duty is infinitely more forgiving. CS:GO is for those who love to play at a hardcore skill level, or for those willing to devote the hours to it.