[V1.5.1] Unified UI

What's new

• Unified UI and skill counter indicator.
• Bug fix.

[V1.5] Balance and Polish

What's new

• Refactor the sources for code reuse.
• Fixed lots of bugs.
• Better UI.

[V1.4] An update after 4 years

I've learnt much about programming so far.
Now it's the time to polish my first game.