We've seen some peculiar Nintendo titles over the years on its systems, including some that have only been released in Japan, but two new trademarks filed by the big N suggest that the crazy could be on the comeback.
Japanese blog esuteru.com has noticed that Nintendo has registered two peculiar trademarks — Mysterious Pet: Legend of the Fish With A Human Face and Mysterious Partner: Legend of the Fish With A Human Face. With those titles being so unique, it looks like this is a revival of rumours that Dreamcast virtual pet game Seaman could make a return, with reports in 2012 suggesting a 3DS release. The original was the work of Yoot Saito, who was the developer of the Guild01 3DS eShop title Aero Porter; we know how popular that game's plane was. With that recent Level-5 collaboration on 3DS, it's not beyond the realms of possibility that Saito would work with Nintendo on a revival of this quirky pet sim franchise.
We'll see if anything comes of these trademarks, but the image above should provide a nice teaser.