The phrase " The Idolmaster Starlit Season v1.61 Goldberg Fixed likely refers to a specific version of a cracked game release
Technical Summary: Implementation of Goldberg Emulator for The Idolmaster: Starlit Season (v1.61) 1. Abstract
Extract the archive. You will find:
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Transitions between the "Visual Novel" segments and the "Stage" segments are noticeably snappier.
The Idolmaster: Starlit Season version 1.61, combined with the Goldberg Steam Emulator