Overdose
Overdose is a Japanese adult PC game brand of Spiel Co., Ltd., known for fetish-focused titles built around the concept of the heroine belonging to the protagonist alone.
Last updated September 29, 2026
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Overview
Overdose (stylized OVER-D.O.S.E.) is an adult PC game brand operated by the Japanese company Spiel Co., Ltd. (株式会社シュピール). The brand's stated concept is that the heroine is the player's own possession — "ヒロインの女の子は、自分だけの物" — and its titles are built around an exclusive-attraction (独占嗜好) style in which the protagonist is the only man who interacts with the heroine. In contrast to many adult games in the violation (凌辱) genre that feature group assault, netorare, or netorase, Overdose deliberately removes any involvement with other men; male characters other than the protagonist are given no personality so that the player's "own world" is preserved. The brand also emphasizes fetishism, with each title focusing on a specific theme such as sweat and scent, tights and legs, swimsuits, or lactation. The official site presents the brand's catalog as twelve titles, including 汗濡れ少女美咲「アナタのニオイでイッちゃう!」, 美脚性奴会長 亜衣「こ、この変態! 私のタイツになんてことを……!」, ズブ濡れの義姉・香澄「私の水着にそんな汚いもの、染み込ませないで!」, 母乳が染み出る愛娘 愛美「お父さん、私のミルクたくさん搾ってほしいの……」, 突発性ミルク娘 千夏「もう、パパのせいでいっぱいでちゃうぅ!」, 甘え母希美「だめよ、そんなにお母さんを求めないで……」, 強引にされると嬉しくて初めてでもよく喘いじゃう令嬢な幼馴染 優衣「やめて、脚に触れないで……でも本当は気持ちいいの」, ぴ~かぶ~! 彼女がエッチな水着にきがえたら!?, 湯の村は~れむ ~巨乳孕ませ温泉滞在記~, すぃ~と・はに~・ふぁみり~ 娘ト妻ニ甘イハ父ノ習ヒ, and ボクと三人のお姉さま ~おねえさん達と孕ませOK嫁選び同棲ライフ!~. The official site describes the catalog as covering themes such as swimsuits, sweat and scent, tights and beautiful legs, single-heroine stories, and multi-heroine stories, with gameplay centered on reading dialogue and story while enjoying event CG and voice acting. Overdose titles are sold through the adult game distribution label Marigold (マリゴールド), according to the Japanese Wikipedia article on the brand. The brand maintains an official site under the love-juice.jp domain and an X (formerly Twitter) account at @overdose_tw. The love-juice.jp site itself is an adult information portal that introduces adult games, commercial comics, and doujin works, and states that it uses information and images provided by official sites, authorized sellers, and affiliate programs. As an adult game brand, Overdose operates in the Japanese domestic adult PC software market. Its positioning is niche and fetish-driven rather than mainstream, targeting players who want a strong sense of exclusivity and a specific fetish focus in each title. The brand is not a listed company; it is a brand of the private company Spiel Co., Ltd.
History
Overdose is an adult game brand of the Japanese company Spiel Co., Ltd. (株式会社シュピール). The brand's concept is that the heroine is the player's own possession — "ヒロインの女の子は、自分だけの物" — and it specializes in fetish-focused adult games with an exclusive-attraction (独占嗜好) approach. In the violation (凌辱) genre, many works feature group assault, netorare, or netorase involving other men; Overdose instead eliminates any interaction between the heroine and men other than the protagonist. Male characters other than the protagonist are given no personality, so that the player can construct their "own world." This policy is applied consistently: the first title, 汗濡れ少女美咲, included a lesbian scene, but from the second title, 美脚性奴会長 亜衣, even lesbian depictions were cut, reinforcing the protagonist-equals-user style. Combined with this, the brand produces games that emphasize fetishism and erotic content. The brand's official site presents a catalog of twelve titles. These include 汗濡れ少女美咲「アナタのニオイでイッちゃう!」, 美脚性奴会長 亜衣「こ、この変態! 私のタイツになんてことを……!」, ズブ濡れの義姉・香澄「私の水着にそんな汚いもの、染み込ませないで!」, 母乳が染み出る愛娘 愛美「お父さん、私のミルクたくさん搾ってほしいの……」, 突発性ミルク娘 千夏「もう、パパのせいでいっぱいでちゃうぅ!」, 甘え母希美「だめよ、そんなにお母さんを求めないで……」, 強引にされると嬉しくて初めてでもよく喘いじゃう令嬢な幼馴染 優衣「やめて、脚に触れないで……でも本当は気持ちいいの」, ぴ~かぶ~! 彼女がエッチな水着にきがえたら!?, 湯の村は~れむ ~巨乳孕ませ温泉滞在記~, すぃ~と・はに~・ふぁみり~ 娘ト妻ニ甘イハ父ノ習ヒ, and ボクと三人のお姉さま ~おねえさん達と孕ませOK嫁選び同棲ライフ!~. The official site describes the catalog as covering themes such as swimsuits, sweat and scent, tights and beautiful legs, single-heroine stories, and multi-heroine stories, with gameplay centered on reading dialogue and story while enjoying event CG and voice acting. According to the Japanese Wikipedia article on the brand, Overdose titles are sold through the distribution label Marigold (マリゴールド). The brand maintains an official site under the love-juice.jp domain and an X (formerly Twitter) account at @overdose_tw. The love-juice.jp site itself is an adult information portal that introduces adult games, commercial comics, and doujin works, and states that it uses information and images provided by official sites, authorized sellers, and affiliate programs. As an adult game brand, Overdose operates in the Japanese domestic adult PC software market, with a niche, fetish-driven positioning rather than a mainstream one.
Release of first title 汗濡れ少女美咲「アナタのニオイでイッちゃう!」, which included a lesbian scene.
Release of second title 美脚性奴会長 亜衣, from which even lesbian depictions were cut to reinforce the protagonist-equals-user style.
Official site presents a catalog of twelve titles.
Products and positioning
Niche adult PC game brand focused on exclusive-attraction (独占嗜好) scenarios and specific fetishes, with the heroine belonging solely to the protagonist.
汗濡れ少女美咲「アナタのニオイでイッちゃう!」
A game focused on sweat and scent, featuring multiple female characters including the central heroine Misaki.
美脚性奴会長 亜衣「こ、この変態! 私のタイツになんてことを……!」
A title thoroughly focused on beautiful legs and tights, centered on the heroine Ai.
ズブ濡れの義姉・香澄「私の水着にそんな汚いもの、染み込ませないで!」
A character-focused title following the single heroine Kasumi.
母乳が染み出る愛娘 愛美「お父さん、私のミルクたくさん搾ってほしいの……」
A title featuring lactation themes with the heroine Manami.
突発性ミルク娘 千夏「もう、パパのせいでいっぱいでちゃうぅ!」
A lactation-themed title featuring the heroine Chinatsu.
甘え母希美「だめよ、そんなにお母さんを求めないで……」
A title featuring a mother heroine, Nozomi.
強引にされると嬉しくて初めてでもよく喘いじゃう令嬢な幼馴染 優衣「やめて、脚に触れないで……でも本当は気持ちいいの」
A title featuring a childhood friend heroine, Yui.
ぴ~かぶ~! 彼女がエッチな水着にきがえたら!?
A swimsuit-themed title with multiple heroines and costume changes.
湯の村は~れむ ~巨乳孕ませ温泉滞在記~
A hot spring-themed title.
すぃ~と・はに~・ふぁみり~ 娘ト妻ニ甘イハ父ノ習ヒ
A family-themed title.
ボクと三人のお姉さま ~おねえさん達と孕ませOK嫁選び同棲ライフ!~
A title featuring three older sisters and cohabitation themes.
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