A cairn, as readers will know, is a pile of stones often placed to mark a grave. Yikes. Not the most encouraging title to give to a videogame about someone trying to climb a mountain. Aava is a dedicated rock-climber determined to make the first solo ascent of Mount Kami, despite the countless lives it has already claimed. Equipped with chalk, rope, pitons, climbing tape and a limited supply of snacks and........

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