Limited Run Games is really upping the ante with its physical editions of otherwise digital-only indie games - just take its awesome version of Saturday Morning RPG and PixelJunk Monsters 2 - and with the publisher's own E3 broadcast due on 11th June it's revealed that Slime-san is now available for pre-order with its very own premium boxset.

The Slime-san: Superslime Edition includes plenty of goodies for collectors, including a keychain, the official soundtrack, a large reversible poster, two postcards, reversible cover art and, of course, a lovely steelbook for good measure. It costs $59.99 and you can pre-order one now (although shipping won't happen until around September).

Have you played Slime-san yet or has it failed to slither into your collection? What do you make of these special retail releases? Worth the cash? Let us know your thoughts in the comments below...

[via twitter.com, limitedrungames.com]