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Early in development, there was a planned dateable character known as "Jessica". This character was developed into the final game's character Tiffany.

The name was slightly altered and given to another dateable girl, Jessie.
Contributed by Takahashi2212
The character Lola has a cut outfit featuring her in a peacoat and scarf. According to HuniePot, it was cut to make room for her bikini outfit.
Contributed by Takahashi2212
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The tokens for the game were originally square (rather than circular as seen in the final game) and also featured different icons.
Contributed by Takahashi2212
The song for the "Lusties Nightclub" location went through several changes before release.

When first asked to make the music, composer "WorldofWandag" made a heavily dub-step inspired club song for Lusties Nightclub, but it was left out because he felt it was "too crazy for a club scene that involved cute anime girls."

The second version of the song is more close to the version found in the final, however it featured lyrics. "It [the song] was a 'Romanian' club song I composed for a feature film. They didn't end up using it so I took out the lyrics and figured it would be a great club theme for Huniepop. Luckily, it worked."
Contributed by Takahashi2212
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NSFW - This trivia is considered "Not Safe for Work" - Click to Reveal
For the game to be released onto Steam, it had to be censored in order to abide with their restrictions on adult content in games.
Contributed by KnowledgeBase