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Next Tomb Raider game leaks after someone leaves laptop open on the subway

And it's not being helmed by regular developer Crystal Dynamics.

Lara Croft's next adventure will be named Shadow of the Tomb Raider, and it's not being made by regular Tomb Raider studio Crystal Dynamics.

ENHANCE.

That's according to a new Kotaku report which has verified an eyebrow-raising leak from Reddit last night.

Remember a few years ago when Assassin's Creed 4: Black Flag leaked because a Reddit user spotted a marketing presentation open on a plane?

Well, Shadow of the Tomb Raider has leaked because a Reddit user spotted its marketing presentation open on the subway. Oops.

Kotaku has since verified the name as accurate (as far as in-development project names can still change) and explained the fact it was spotted on the Montreal subway - which is the other side of North America from Tomb Raider developer Crystal Dynamics.

Shadow of the Tomb Raider will instead be developed by Eidos Montreal, of Thief and Deus Ex fame - a fact Eurogamer sources have also verified.

It sounds like a Batman: Arkham Oranges situation, where a Montreal-based team takes charge of a third installment while the franchise's main developer gets a little more time to focus on their next project.

All of which means - if Crystal Dynamics is still on Tomb Raider too, and everything we've heard suggests so - there are now two big Tomb Raider titles in development.

What's the betting that neither will be a timed-exclusive?