Mortal Kombat X recently received update 1.02, which improved the game's balance, bettered online stability, and even added a free DLC skin in the form of Klassic Sub-Zero. Of course, the game will receive many more updates and patches down the road as well.
It'd be understandable to assume that future updates will lack as much content as the first one, but according to series creator Ed Boon, that's not the case. In fact, he has promised on Twitter that all future updates for Mortal Kombat X will feature a free DLC skin.
This is all part of an intricate post-launch support campaign that is being carried out by NetherRealm Studios and WB Games. There will be future paid-DLC skins as well, along with new characters, and even Klassic Fatalities.
As for why NetherRealm is giving away a free skin in each update, it is possibly just a sign of goodwill and appreciation for the Mortal Kombat fans. After all, those fans propelled Mortal Kombat X to being the success that it has become, making it the fastest-selling game in the history of the series.
NetherRealm's appreciation for their fans has already been showcased in the past. To make up for the rocky PC launch of Mortal Kombat X, NetherRealm included a bonus in update 1.02 for them, adding 10,000 free Krypt Koins to spend on in-game content.
Another possible reason is the controversy surrounding the game's microtransactions. The inclusion of microtransactions in any form is enough to stir up hardcore gamers, and there has been some backlash over the microtransactions in Mortal Kombat X. These microtransactions, among other things, allow users to purchase easy Fatalities.
That being said, Mortal Kombat X has fairly "easy" Fatality combos to begin with, especially compared to previous games in the series. Furthermore, the Krypt Koins can be used to purchase the easy Fatality tokens as well, so it's entirely possible to earn them without having to use real-world money.
Even so, there's no denying that many people have an automatic negative reaction to microtransactions. The folks at NetherRealm and WB Games are aware of this, and the free skins could be seen a way to satisfy those that cry foul at any hint of microtransactions in games.
In any case, Mortal Kombat X has a deep roster of characters, with 24 playable fighters total (not counting those available as DLC, or those that have been modded into the game). Because of this, it's not exactly easy to guess which character will be the next to get a free DLC skin. They will likely stay away from releasing free skins for any of the DLC characters like Jason Voorhees or Predator for the time being, so the new skins are almost guaranteed to be for on-disc characters. Perhaps we'll see more "Klassic" costumes for series mainstays such as Scorpion or Liu Kang.
Mortal Kombat X is currently available for purchase on PC, PS4, and Xbox One. The game will be releasing on PS3 and Xbox 360 at an undetermined point later this year. There's also a mobile version of the game available on iOS devices, with an Android release also in the works.