O-Chan no Oekaki Logic

Sunsoft

Industry	Video games
Headquarters	Japan
Products	Video games

O-Chan no Oekaki Logic is a puzzle video game created and distributed solely in Japan by Sunsoft. Initially launched for the PlayStation in September 1995, this title serves as a derivative work from Sunsoft's Hebereke franchise and has been adapted for several other platforms. Unlike earlier entries in the series, this installment features Utsuzin as the primary villain. Although there were plans to release the game in Europe under the name Oh-Chan's Logic, this version was never published. The game later inspired two follow-up titles.

Plot

In the Sega Saturn edition, the character O-Chan embarks on a mission to rescue Hebe after Utsuzin kidnaps her aboard a UFO. The narrative concludes with an ambiguous ending, revealing that O-Chan awakens from what appears to be a dream.

Gameplay

Players engage in solving nonogram puzzles by accurately chiseling sections of a grid to advance through levels. The game offers a multiplayer mode where participants race to complete puzzles more quickly than their opponents, alongside an editing feature that allows users to design their own puzzles.

The Sega Saturn version enriches the experience with a story mode that includes various adversaries and time-limited challenges, increasing its replayability. Additionally, it provides a tutorial mode aimed at helping newcomers familiarize themselves with the mechanics.

O-Chan no Oekaki Logic 2

This sequel debuted on September 27, 1996, for the PlayStation and was subsequently ported to the WonderSwan on January 6, 2000, where it was released without the "2" in its title. It brought fresh puzzles, new musical tracks, and enhanced graphics. A painting mode was introduced, requiring players to color the puzzle grid fully. The game was reissued under budget labels in both 1999 and 2001.

O-Chan no Oekaki Logic 3

The third and final installment appeared exclusively on PlayStation on January 11, 2001. Using the original engine from the first game, it expanded the number of available levels but did not include the additional features introduced in the second entry.

O-Chan no Oekaki desu wa

Released in 2004 for mobile platforms, this title represents the last Hebereke series game released for over twenty years. It is thought to be a remake of the original game; however, comprehensive details remain limited.