the original Sonic the Hedgehog as having the greatest music of any video game, largely as a result of Green Hill's theme. Critics have compared levels of later Sonic games to Green Hill, as well as to World 1-1 of Super Mario Bros. Turi considers Emerald Hill from Sonic the Hedgehog 2, Mushroom Hill from Sonic & Knuckles, and Seaside Hill from Sonic Heroes to fit the same general mold as Green Hill, noting repetition in Sonic level design and stating that "gamers have played Green Hill Zone dozens of times." However, he has opined that the Sonic Generations version of the original Green Hill "trounces them all" in both its 2D and 3D incarnations. Justin Baker of Nintendo World Report and Skrebels both analogized Windy Hill from Sonic Lost World to Green Hill, while Carter thought similarly of The Legend of Zelda downloadable content levels. The decision to include Green Hill in other games in the series, such as Sonic Forces, has been a source of debate among some fans, who believe that Sega has overused the stage since its debut. Green Hill Zone has also been recognized by critics as a classic, well-known video game level. It has been described as "classic" by Samit Sarkar of Polygon and by Jim Sterling and Chris Carter of Destructoid. Comparably, Joe Skrebels of Official Nintendo Magazine called it "nostalgic", while Christopher Grant from Joystiq considered it to have a place "in the center of your retro-gaming shrine". Kevin Wong of Complex stated that the game's and level's popularity were such that "even if you didn't have a Genesis, this was the level you played at the department store while your parents went shopping." Andy Kelly from Computer and Video Games called the Green Hill theme a "monumental slice of Sega nostalgia", and GamesRadar writer Justin Towell also referred to it as classic. Anka has summarized that "Green Hill Zone in the original game has gone down as an instantly recognisable piece of music in pop culture". To mark Sonic's fifteenth anniversary in 2006, Sega released a papercraft version of Green Hill as a PDF on its website. In 2011, not long after the release of Sonic Generations, Sega held a contest inviting gamers to upload YouTube video playthroughs of the game's 3D version of Green Hill completed in less than one minute and fifty seconds; winners were eligible for Sonic merchandise.