Built-in autosave feature (for the TE version).

In TE, the Tower strategy isn't effective against Necropolis either. :D
2 asm-

There are bugs when clicking the button to pass the turn from red to blue, but I think I've figured out how to fix them.

Even though I'm not a programmer, I think this is called bug fixing. And bugs are things that appear once in every 10-50 games. Like battle desynchronization. And until the version (is it called a beta?) is tested by users, it's too early to talk about fixing bugs.