This is a word game. You have a deck of cards that can modify each letter (apply arithmetic on the letters index - indexed from 1). You try to get from the given word to the goal word using your cards. If you succeed  you can buy upgrades in the shop.

Get going. To get started try to go "from hero to zero" :)

Game by Nikolas Ján Hamarik and Oliver Tomáš Cenker

Here is a link for this game to play in the browser:

https://cenkyy.itch.io/from-hero-to-zero