Divine Games

First of all, thank you for a fun, fantastic, well-balanced, and challenging game!

I'd like to propose configuring a right-click toggle to "block" / "allow" upgrades.

Consider that Alliance upgrades transition to a new unlock chain of Excavations, while other upgrades (e.g. Building, Secret, etc.) alter mechanics with potential to disrupt Challenge unlocks.

When left-clicking to unlock various upgrades, an accidental click on the wrong upgrade can disrupt that careful planning.

Of course I noted that "Buy All" tends to avoid upgrades with such impact - this would be a similar feature to avert mistakes.

Thank you for considering this!