This cancellation was widely reported in the gaming press, who were largely sympathetic to the project. A few weeks prior to the expected released date, Square Enix sent the developers a cease-and-desist letter for knowingly violating Square Enix's intellectual property, which led to the cancellation of the project. The game reportedly totaled around 35 hours of play time, and had ten alternate endings. The project was in development from 2004–09, with 98% of the game completed. Crimson Echoes concludes by setting up several plot points that were used in Chrono Cross. The plot includes elements from both official games.

It is based five years after the events of Chrono Trigger and features all the playable characters from the original game, who come together across different time periods to fight an enemy attempting to change the past. The game, as a ROM hack, runs on the Chrono Trigger game engine and has gameplay similar to the original.

It was conceived as an unofficial installment in the Chrono series, set between the events of Chrono Trigger and its sequel Chrono Cross. Chrono Trigger: Crimson Echoes is a fangame developed by the international team Kajar Laboratories as a ROM hack of Square's role-playing video game Chrono Trigger for the Super Nintendo Entertainment System.

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