Killer Instinct: Definitive Edition combines all content previously released for the Xbox One game Killer Instinct into a single package along with some new elements. It contains:

• Killer Instinct (base game with all characters and content from seasons one to three)
• Killer Instinct Classic 1 (base game)
• Killer Instinct Classic 2 (base game)
• Behind-the-scenes videos
• Gold Gargos skin exclusive to this edition (physical release only)
• Interactive universe map with stage location details
• Original soundtrack (physical release only)
• Special features like every song in the KI archives, every character trailer, and never-before-seen concept artwork

The combined content consists of 26 characters (including pre-order special edition Shadow Jago) and 20 stages.