This game is quite fun and good, but it's even better if you add some things that contain blood and sadism to make it closer to the theme.

Nope.

Where's the blood theme?

I do not know which or where is the recreation part but this is the exact open-source HTML5 project I had two years ago when I'm learning javascript game development. They even had the same colors.
Sorry I have to say this. I was a beginner in JS too, so I understand the struggle to make a functioning game. But reuploading the same project from github and claim it as recreation without any changes is just wrong.
There was even no application of the theme here.

I am not discouraging your aspiration for game dev, or your ways for it.
I wish you best of luck on your game dev journey. Rushing this process will be messy. Taking a step forward little by little will be wise.