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Ghosts in rocket ships? Witches who are handy with a wrench?

Yes, Opus: Rocket of Whispers is strange tale told in an unusual way. One minute you're exploring a snowy wasteland looking for rocket parts. The next, you're arguing with impatient spirits and helping a witch in a parka with her technical schematics.

We take an early look at this peculiar mobile game, due to hit app stores later this week, to try and work out what's going on under its snowy surface.