Wiktionary
slitherlink
alt. a puzzle which involves connecting dots so they form one big loop n. a puzzle which involves connecting dots so they form one big loop
Wikipedia
Slitherlink
Slitherlink (also known as Fences, Takegaki, Loop the Loop, Loopy, Ouroboros, Suriza and Dotty Dilemma) is a logic puzzle developed by publisher Nikoli.