Dice Lord

Your username will end up in the credits of the game 

This could range from a new skill tree, to a few random events, or even a whole new aspect to the game like xp. (name in credits aswell)

You'll have an entire 2 layouts dedicated to what you choose. New mechanics, new upgrades, etc. Your name will also be in the credits.

This is seperate from a custom feature as you could add a whole new mini game inside this area while the custom feature is limited to still following how dice lord runs. The 2 pages mean 2 layouts as construct 3 uses layouts (so the main menu is 1 layout and the credits is another). Aswell the pages could be something like a platformer that provides green bits and red bits or something (which is different from the idle clicker portion of the game)