Quick question about Letter Boxed-style puzzle idea

Hi everyone,

I’ve been working on a small puzzle concept inspired by Letter Boxed and trying to figure out how to build the logic in Unreal Engine.

Before going deeper into the mechanics, I also had a quick side question while researching inspiration: is letter boxed free to play for everyone? I’ve seen mixed information, so I’m trying to understand how accessible it is for casual players versus full access.

From a design perspective, I’m aiming for something similar in feel — simple rules, but deep logic where players connect letters in a constrained space to form valid words.

If anyone has experience building puzzle systems like this in Unreal Engine, I’d love to hear your approach, especially around:

  • Structuring rule-based logic

  • Managing node/letter relationships

  • Keeping the system flexible for future expansion

Appreciate any insights!