Simplify the following text for a Grade 6 native English-speaking person.
Original: Environments range from jungle terrain , to desert , to tundra , all of which are affected by a day-night cycle , except for interior levels which are artificially lit .
Simplified: There are climates such as jungle , desert , and tundra . All area squares can are changed by a day-night cycle , except for levels that are set indoors .