iO

iO is a physics platformer in which you control a ball.

By growing or shrinking the ball you can influence its speed and weight.

The PlayStation 4 (2013) cemented Sony's dominance of the eighth console generation, with a library exceeding 30,000 titles once indie and digital-only releases are counted. Most PS4 games remain affordable for collectors, but limited physical print runs — particularly from smaller publishers and later in the console's life cycle — are starting to see steady price increases as digital storefronts eventually wind down support.

Gamevaro tracks iO for PlayStation 4 with separate market values for loose, complete-in-box (CIB) and factory-sealed copies, sourced from real eBay sales. Prices also vary by region — PAL, NTSC-U and NTSC-J releases of the same game often sell for different amounts due to print run sizes and regional collector demand.

Adding iO to a Gamevaro collection takes seconds — search by title or scan the box barcode, and the app fills in cover art, release details and current pricing automatically. This PS4 release dates back to 2014.

Market insights

Only a handful of market sales have been tracked for iO, suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common PlayStation 4 titles.

Complete-in-box (CIB) copies typically command a premium over loose cartridges/discs because the original box and manual are more fragile and get discarded or damaged over time — fewer complete sets survive.

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