The .rar archive contains the update files and typically includes a small executable (often a custom installer) to apply the patch.

Cozy Grove is a real-time game meant to be played in short daily sessions of roughly 30–60 minutes. If you are using this update to resolve bugs in a long-term save, the v4.2.0 fixes for "broken" seasonal festivals are particularly useful for players who have been active for more than a year. Update History (Cozy Grove)

The v4.2.0 update for Cozy Grove primarily focused on substantial quality-of-life improvements and preparatory work for premium content.

Automatically adds an additional row of slots to the default backpack size for all players.

Included a "speculative fix" to prevent save file corruption caused by accidental time traveling, as well as general memory improvements for low-end devices.