"giant enemy crab" whom players could "attack its weak point for massive damage."
According to Kotaku, "there are unconfirmed rumors that Okamoto and Game Republic owed large amounts of money in back loans, and that Okamoto has even skipped the country." This rumor remains unsubstantiated, however.
The oddity is that Game Republic closed without so much as a brief press release or statement from Okamoto. More news when - or if - it comes.