OVA: Wanna Squiddle with It?/Aren't You a Squiddle Weird?/What Do You Ink of Hide-and-Seek? Shinryaku! Ika Musume : Season 3 Episode 1

The three MIT space alien researchers invent an indestructible game console that Musume and Eiko only too willingly test - Chizuru tries to be normal by downplaying her superhuman abilities at the beach house restaurant - and back home Musume plays a game of hide-and-seek as part of a strange prank.