This will be great if in the game will be day and night cycle

I think the 10 minutes time between changing will be good.
In the day will appear some animals what will not appear at night, and vice versa.
And these at the night will be more dangerous (higher level, more tigers etc.)
But
At night will be XP bonus after defeating 5 animals at start of the night

It will continue to the morning (10 minutes later)
How aboit this idea?
Player