Today I implemented, that biomes affect the weather. For example it's now cold on the top of mountains, there is nearly no rain in deserts or a lot of rain in tropical rain forests. I also released the next version:

Change log:
added:
- biomes

changed:
- added delay between background songs

bug fixes:
- it wasn‘t possible to drink directly from ponds and rivers with the middle mouse button
- wrong texture scaling, if something was placed on a door hinge