Update RPG WordPress Plugin

I need an experienced WordPress developer to update an older RPG game plugin. The plugin currently runs an RPG game on my site, but it needs some updates to improve functionality and ensure compatibility with the latest WordPress version.

Key Tasks:
- Update game mechanics, including adding a 'Pro Version' feature.
- Ensure compatibility with the current version of WordPress.

Ideal Skills and Experience:
- Strong background in WordPress development.
- Experience with RPG game mechanics.
- Ability to update and modify existing plugins.
- Familiarity with WordPress compatibility issues and solutions.

Please provide examples of similar work done.