MOD CRAFT

Optifine HD render mod + shaders. Note 12fps (this is 4K on a 1050ti)

The Structure Block allows copy/pasting of 32x32 selections.

Off-hand item holding combined with a mini map plugin.

Enchantments stack to provide sword variety - and you can script your own.

Potion brewing is deeper than you might think, and functions as a magic system.

Note missing horizon below. Java keeps the game open, but has its limitations.