Several of the top and iconic multi-player games of today have origins that go back to around two decades in the past. Many of these had their original initial releases in the late 1990's to early 2000's. During those times, one of the most popular game genres which has no doubt made such a great impact in the gaming industry is the First Person Shooter. Whether it be themed in the past, the current present or the grim future, FPS gaming has always made it a point to draw in a huge game playing crowd. One of these games came out in 2003 and it was called Call of Duty.

Initially built using the Quake 3 Arena game engine, Call of Duty was developed and released by Infinity Ward and Activision as a WW2 FPS combat adventure game. The player played the part of a WW2 grunt slugging it out with grunts from the other side in a mission-objective type environment. WW2 games where such a hit during those times and Call of Duty had some stiff competition as well the likes of games as Medal Of Honor and several others. Nevertheless, Call of Duty or COD has prevailed through the years peaking it's popularity by introducing both multi-player LAN and on-line modes for both PC and Consoles through the myriad of iterations of the game.

By 2007, with the release of COD 4 Modern Warfare, the game's setting had moved from WW2 to the current day combat environment by using the then current global conflicts as possibilities for a war scenario. This wetted the appetites of gamers worldwide which started the COD ball rolling causing an annual modern combat iteration line-up to be successively released. It was quite fruitful though as the emergence of the eSports industry caught COD fans and players square in the face so to speak. COD fans flocked online to watch their favorite eSports players slug it out via tournaments and online game plays. Esport professional teams where set-up and established and game streamers where having a heyday as COD became the Internet sensation of the day.

Several of the game's iterations include COD World at War, Black Ops, Ghosts and Advanced Warfare and these where coming out on a yearly basis. Online competitive gaming on the PC, Twitch and other streaming platforms like YouTube has become a way of life for the mass gaming public. By 2016, things started to slacken-out for COD for several reasons. The biggest being features added to the game play that majority of the players did not like. One of these was the jump jets which made COD look more like the futuristic Unreal Tournament than the contemporary timeline combat environment they where used to slugging it out on. Another reason was CSGO. CounterStrike has always been most FPS combat game's main competitor and in 2016, it became the DeFacto eSports FPS title and still is to the present date.

Still COD continues to retain it's player base online and is after all one of the best selling FPS games in gaming history (Black Ops sold 30M copies compared to COD Modern Warfare 2 which went up to 25M.) and the graphics and game play quality of the latest iterations for the PC are really awesome to behold. But then, in the gaming industry (and industry in general), expansion and growth are both a necessity. Thus, COD Mobile was released in 2019 for the gaming crowd who played on their tablets and phones. Mobile gaming through the years however, was not able to present the kind of impact that PC games had but with today’s advances in the mobile gaming industry, mobile gaming just seems to get better and better. To this, COD Modern Warfare and Warzone where both released for mobile as well.

At this writing, COD is still quite new on the mobile gaming circuit but is currently packing a hard punch. Compared though to the PC version, unless one has the latest iPhone or Android device with optimal graphics capabilities, the usual graphics output will still pale in comparison to the supercharged GPU's of the PC world. Mobile output has already gone a long way and breathtaking but will still need more power to really match the PC GPU's framerate and quality. To many players however, graphics can be forgiven as they are all busy trying to stay alive and slug the other guy before they eventually get slugged themselves.

The PC or Console uses a monitor big enough to fit your face into. With mobile, you are usually peering down into a phone or a tablet so everything looks a lot smaller. If you've been playing games with your PC/Home Console then you may have to re-adjust yourself for mobile gaming. Jumping between PC and mobile game play may not be that easy especially if you are used to playing via your keyboard keys and mouse. Playing with a game pad alone may even be frustrating to some, what more when one has to use one's finger to tap and shoot or maneuver on the screen when moving the mouse has become a natural action or reaction to one. These differences may not look big at first but when you're in the middle of a game, the skill you have in using the controls will determine how long you will last till your opponent frags you down.

FPS gaming is very fast and furious whether you go against bots or with other players. The human component however provides more twists and challenges as you never really know how the other guy will react to your moves and what he or she is going to do (always be advised not to discount the Grrrl players, they are usually good and tricky). At this level there is very minimal difference whether you play COD on the PC, the Console or a mobile device. A Frag is a Frag and as long as your gaming device or ISP can deliver a speedy connection, a fair fight is very much the same anywhere mobile or not. There are COD streamers that go up online against either PC or mobile based opponents and the competitive game play has not diminished in any way. This bring the mobile gaming crowd up to speed and another notch higher. It also gives Activision a successful access to the mobile gaming industry a huge potential to continually extend COD and it's market value.

Personally however, at this time, PC gaming will always have the advantage in terms of gaming experience and of course the graphics and audio wow factor. However, time will tell as mobile device technology continues to advance and the games for it as well.