I was really confused over Splatoons unveiling initially because I recalled seeing commercials for de Blob years back, thought it looked cool, but never played it and was like: 'Doesn't this already exist? Why is everyone speaking of a brand new, never seen before concept...?'
Someone on here helped me remember what game I was thinking off and after rewatching the trailer I reconized just how diffrent they are.
There was this really funny video that I can't find now of this guy claiming that Nintendo stole the idea for Splatoon from Xbox, and he showed footage of an old cancelled Xbox Live Arcade game xD . To be fair, it actually looked a lot like splatoon ... just not as unique. Plus, I can't imagine Nintendo in Japan were sitting there looking at old unknown cancelled XBLA projects to steal from ... lol