Despite their young audience, kids’ games can be surprisingly inappropriate. Developers sometimes include secret Easter eggs to amuse older audiences. Some moments on this list are only recognized by adults, but the rest are clearly visible for all players.

If developers choose to include inappropriate moments, their games really ought to have higher age restrictions. As it is, we have no idea how so many inappropriate games are labeled as kids’ games. Nearly every game on this list was given an E (Everyone) rating by the ESRB, an organization established in 1994 after the public criticized video games’ inappropriate content. Some of the games below are rated E10+ and thus are designed for slightly older audiences. Because of their ratings, these games influence children across the world.

9 Kazooie’s Innuendos — Banjo-Kazooie

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Kazooie insults characters throughout Banjo-Kazooie, but she’s usually appropriate within the E-rated game. However, she throws in some innuendos that are inappropriate for all ages. Even though children are too young to understand the jokes, the game draws so much attention to Kazooie’s comments that children instantly recognize her vulgarity.

Kazooie’s most explicit joke appears in Gobi’s Valley. After Trunker (a tree that grows coconuts) explains that it’s “shriveling up,” Kazooie asks: “How’s your nuts?”

In the game’s bonus ending, Mumbo shows us a picture of the Ice Key. Banjo describes it as “a giant ice key,” and Kazooie replies: “I know where I’d like to stick that.” While she might want to stick the key up Mumbo’s rear, Kazooie’s probably referring to personal pleasure.

8 Stereotypes — Punch-Out!! Series

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Many kids’ games effectively use one-dimensional characters for jokes and simplistic storytelling, but the Punch-Out!! franchise inappropriately uses stereotypes to create one-dimensional characters. Characters do little other than fight in Punch-Out!!, but their moves, visual designs, voices, and names advance terrible stereotypes. When you defeat a French boxer in Punch-Out!! (2009), croissants and baguettes magically fall out of his body. Great Tiger —a recurring character in the series— comes from Bombay, wears a tiger hide and turban, and uses magic (which causes the ruby on his turban to glow).

Video games have generally improved in these areas, but Punch-Out!! hasn’t changed a bit. We thought the stereotypes couldn’t get worse after the first game (there’s an Italian character who’s actually named “Pizza Pasta”), yet Punch-Out!! continues to be one of the most racist franchises designed for children.

7 TEC-XX Watches Princess Peach Shower — Paper Mario: The Thousand-Year Door

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Some players think TEC-XX’s love for Peach is cute, but most recognize just how creepy TEC-XX is. Designed to guard Peach within her prison cell, TEC-XX ends up loving and helping Peach.

TEC-XX falls in love by watching Peach — more specifically, by watching Peach shower. You can’t progress in Paper Mario: The Thousand-Year Door until you jump in the shower, at which point TEC-XX opens a new path. The computer unlocks doors that lead you to it (if that doesn’t terrify you, you obviously haven’t played System Shock). TEC-XX explains its attraction to Peach in terribly inappropriate words, saying that its circuitry “nearly overheated at your image” and that it desires “to observe you.” Peach concludes that TEC-XX loves her, but that’s not love — that’s voyeurism.

6 Starlene’s Growing Body — Ratchet & Clank

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If you side-jump in front of Starlene, the woman who runs the hoverboard races in Blackwater City, her breasts will grow. They get bigger every time you jump, making them as large as her torso.

It’s unclear if Insomniac Games intentionally included this mechanic. Whether we’re witnessing a glitch or a developer’s joke, Starlene’s growing breasts are extremely bizarre. The Ratchet & Clank franchise isn’t particularly subtle about its crudity, using titles like Up Your Arsenal and Size Matters. Every game in the series has an E10+ rating to protect young viewers.

5 Nabooru’s Promise — The Legend of Zelda: Ocarina of Time

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Almost every female character in Ocarina of Time loves Link, but none are as creepy and inappropriate as Nabooru. You first meet Nabooru as a child, when Nabooru is clearly much older than Link. When you choose to help her, she promises she’ll “do something great for you.” Nabooru’s kidnapped before you receive your reward, but she hints again at her promise when you rescue her as “Adult Link” (he’s technically still a teenager). After noting how handsome you’ve become, Nabooru concludes: “I should have kept the promise I made back then.” By referring to Link as “a handsome man” beforehand, Nabooru heavily implies that she would have given you a romantic award.

4 Walking In On Roll’s Bath — Mega Man Legends 2

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Many video games include moments where players can “accidentally” walk in on undressed women. This is always inappropriate; however, kids’ games get away with it through censorship and naïve protagonists.

In Mega Man Legends 2, the protagonist knows exactly what he’s doing. Data informs Mega Man that Roll is taking a bath. Mega Man may then enter the bathroom, when Roll yells at him to get out. As if this intentional intrusion wasn’t bad enough, Mega Man proceeds to pump his fist while triumphant music plays. Capcom actually rewards players for violating Roll. Mega Man and Roll may have a great romance during the rest of the game, but Mega Man’s invasion of privacy is extremely inappropriate and creepy.

3 Great Fairies — The Legend of Zelda Series

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If you’re looking at the picture above, you know one thing: that Great Fairy is naked. Nintendo might try to technically cover her with leaves, but those leaves are tiny, widespread, and almost translucent. It doesn’t help that most of the leaves are designed as part of her skin rather than clothing which covers her skin.

The Great Fairies in both Ocarina of Time and Majora’s Mask share the design in the above picture. Moreover, the Great Fairies cry out and groan whenever you encounter them.

Breath of the Wild, despite having a higher rating of E10+, fortunately, has more appropriate Great Fairies. The Great Fairies in Twilight Princess and Hyrule Warriors are worse, but those games protect children’s eyes through T ratings.

2 Rock Formation In Terrydactyland — Banjo-Tooie

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Every game in the Banjo-Kazooie trilogy includes innuendos references via dialogue. However, the series only includes one adult Easter egg in its stage design — and it’s a big one. The peninsula in Terrydactyland seems like an average platforming challenge when you’re traversing it. If you fly over the rock formation, however, you’ll immediately notice its similarity to a man’s privates.

Since Rare has so much fun with inappropriate Easter eggs, we’re surprised Terrydactyland is the only stage with secrets. Perhaps we simply haven’t found hidden Easter eggs; after all, most people don’t expect such atrocities in E-rated games.

1 Last Stage In Red Canyon — Kirby’s Dream Land 2

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You need to complete five levels in Red Canyon before you can fight the boss. At the end of the fifth stage, you drop into a series of platforms. As you make your way past the platforms, you’ll notice a strange formation. A smiley face sits at the top of the stage, followed by two U-shaped platforms, a lone block, and a V-shaped platform that trails downward. When pieced together, the platforms form the shape of a woman, including and her private parts at the bottom.

HAL Laboratory made the stage as inappropriate as possible while successfully hiding it in an E-rated children’s game. You don’t simply pass by the blocky picture of a naked lady: you must move down the woman’s body to a door.