-Added 3 new levels: Level3-4E, Level4-1E, Level4-2E
-Temporary discontinuation of the old online system, the new online system will be released in the next major version update
-Note: Multi-ball mode is used for the first time in Level4-1E, you can use the Tab key to switch between balls in multi-ball mode
Ballex² Ver. 0.17.0 Major Update Changelog
Source: Steam Community (opens in a new tab)