Sprite Sheet

 512 x 512 at 72 dpi for small sheets - mobile games projects

1024 x 1024 at 72 dpi for medium sheets - mobile and 1080p projects 

2048 x 2048 at 72 dpi for medium sheets  - mobile and 1080p projects 

4096 x 4096 at 72 dpi for larger sheet - 1080p and 4k projects

8192 x 8192 at 72 dpi for larger sheets - 4k and 8k projects 

1. creat a folder"Environment"

2. drag the sprite sheet into this foder

3. change the "sprite mode" to "Multiple"

4. open "Sprite Editor"

5. Auto Slice > Apply