Advanced users used a tool called Lucky Patcher to remove license verification and in-app purchase confirmation. By patching the APK on their rooted device, they could simulate purchasing every DLC pack for free. This worked—until the game force-updated, breaking the patch.
By 2021, Groove Coaster 2 had been overshadowed by its successor, Groove Coaster: Wai Wai Party (on Nintendo Switch and PC) and the newer mobile title Groove Coaster (2020 re-release) . Taito had effectively ceased major content updates for GC2 Original Style. The in-game shop was still functional, but DLC packs were expensive, and some time-limited event songs were no longer obtainable.
This created a perfect storm for the "mod unlock all" search. Players who discovered the game in 2021 faced: groove coaster 2 apk mod unlock all 2021
Thus, the dream of a single APK file that unlocked everything—songs, ships, avatars, and backgrounds—became the holy grail.
Here is the hard truth for anyone still looking for this specific 2021 file. Advanced users used a tool called Lucky Patcher
The Short Answer: Most of these mods were either non-functional, massively outdated, or straight-up malware.
Here is why the "Groove Coaster 2 Unlock All" dream failed for 99% of users: Thus, the dream of a single APK file
If you have an iPhone or iPad, this is the best mobile option. A subscription to Apple Arcade ($4.99/mo) gives you access to the "Unlock All" experience natively—no microtransactions, no grinding, just the full library.
If you stumble across a file named Groove Coaster 2 v3.7.2 Mod Unlock All.apk from a 2021 archive, be aware of these risks: