Can I play Killer Instinct on PC, Mac or Linux?

There is no known port for Windows, macOS and Linux yet.

Is anyone working on a port of Killer Instinct?

Nobody has published one on RecompHub yet. Games people want that still have no port are listed under What to work on next.

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Differences from the arcade version includes that of a training mode, a tournament mode and other options.

Can I play Killer Instinct on PC, Mac or Linux?: There is no known port for Windows, macOS and Linux yet.
Is anyone working on a port of Killer Instinct?: Nobody has published one on RecompHub yet. Games people want that still have no port are listed under What to work on next.