# The Perfect Tower II v0.15.3 Build 1 (3 Feb 2023)

Web version: https://www.perfecttower2.com/changelog/0.15.3-build-1/

## New Stuff

- Added underground challenge #1
- Added underground challenge #2
- Added exotic skill 'Hyper Trade' to Trading Post
- Added basic AI settings
- Added atomic functions (experimental)
- Added AI function 'Math: Sin'
- Added AI function 'Math: Cos'
- Added AI function 'Math: Tan'
- Added AI function 'Math: Asin'
- Added AI function 'Math: Acos'
- Added AI function 'Math: Atan'
- Added AI function 'Math: Atan2'

## Changes

- Updated exotic skills menu to use new UI components
- Modifiers can now be toggled on and off in the town stats modifier menu

## Fixes

- Fixed ||era worker not upgrading era divider xp cost reduction inside Workshop||
- Fixed donut worker
- Fixed exotic experiment not storing essence generation progress
- Fixed ||head of era research worker constantly restarting the research||
- Fixed ||infinite damage to cause infinity reflect to divide by infinity||