What is the Diggy Dig game, how does it work?

According to the introduction of Kyuppin, Diggy Dig is a Action game on the Android platform. There is currently a 1.2.1 version released on Jan 25, 2016, you can see the details below.

?Simple controls! Just swipe or tap to dig!

?Dig through blocks and rocks & dodge water jets and lava as you try to beat your high score! Collect coins and sweets along the way to extend your game time and unlock new characters!

?Plenty of fun and creative characters to collect! All characters gain experience and have their own shiny & fancy versions to unlock!

?Music made by Holder (MajorLeagueWobs) !

?Show off your skills at the crane game to unlock new characters! Which character you unlock depends on your skill!

?Multiple locations to play at, each with a unique theme! Different characters have their own environments to play at!

?Compete with friends and the world with leaderboards! Compete to get the highest score or to see who is the highest level!

What's new in version 1.2.1 v1.2.1
-Fixed an issue with the load screen
v1.2.0
-Added one new character
-Fixed many small glitches
-Updated the core mechanic for digging down. You can now dig faster, without any hiccups.
-Added a "share for coins" social option
-Various aesthetic additions
-Added new quests
v1.1.4
-You can now rotate the crane game by swiping on it!
-Fixed some minor glitches
v1.13
-Fixed a glitch with the crane machine
v1.12
-Easy mode high score markers
-fix getting stuck on vanishing water and rocks