Free-to-play , a port of the 1996 arcade game that features Xbox Live multiplayer and 1000 Gamerscore to earn. Finally, Ultra Edition owners will receive access to new characters and customization items before they are released to everyone else.

The first four confirmed characters for Killer Instinct's second season are TJ Combo, Maya, Riptor, and Cinder. The second four were not named outright, but Microsoft teased that they include an "ancient Babylonian sorcerer, an avenging ghost, a battle-hardened war golem, and more." Can you guess who they are?

In addition to the new fighters, Killer Instinct season two introduces a new user interface, which should allow for faster access to characters, better statistic tracking, and a "new experience system [that] makes the entire experience of Killer Instinct even better."

What's more, Microsoft says the entire fighter roster for Killer Instinct's first season has been rebalanced for season two. The company adds that characters will now even have new techniques and abilities to use. Further still, Killer Instinct season two will feature an "enhanced combo system" that features a brand-new "aerial recapture" option that allows players to catch an opponent in the air and send them crashing back to the ground to continue their combo. "Juggling air attacks has been increased, but the addition of Air Breakers and Air Counter-Breakers mean that there's always two-way interaction in a combo for both players," Microsoft said.

Finally, Killer Instinct season two features a new progression system that will allow players to earn costumes, accessories, and other badges "faster than ever before." As part of the new system, individual characters will have levels in addition to their overall player level. "Every mode you play contributes to both character and player level, and 'Fight Challenges' help players rack up experience points (XP) every time they complete a rank," Microsoft said.

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