What is the Small Living World game, how does it work?

According to the introduction of 777 Pixels, Small Living World is a Simulation game on the Android platform. There is currently a 01.00 version released on Nov 05, 2018, you can see the details below.

Small Living World is a fully simulated ecosystem running in your hands.
No stress, no pressure, you drive the development at your rhythm.
You start with an almost desert world that you bring to a lushfull forest landscape.
Everything is under your control, from the landscape shape to the plants and animals that live there.
The world evolves on his own, slowly developing into a mystical forest.
As the creator, your role is to build a suitable environment for each species that you introduce.
To live happily, all animals must find enough food. Be cautious, each have their own regime, and some are even vicious predator.
The water cycle is fully simulated, from the lacs, to the clouds and returning to the land.
24 plants and 16 animals species are waiting to populate your world.
Up to 6 worlds can be created simultaneously.
In-game purchases allow to unlock special animals and plants. Unlocked items are permanent and valid across all saved games (buy once, own it forever).

What's new in version 01.00 First Public Release Candidate!
Hooray!
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- Raise age for Maple Tree syrup bucket
- Create the Killer Rabbit.
- Performance improvement : Fairy scan
- Prevent Tree of life to spawn too many spirit.
- Prevent Grow Plant command to affect Tree Of Life
- Prevent Kill Plant command to affect Tree Of Life
- Show Trophy description longer
- Improve Tree of Life visual.
- Improve clouds visual, or at least tried to.