Pokemon Dark Energy is a GBC Rom Hack that takes place in the world of Suden. It has a unique storyline, optional side quests, & a lot more to discover. This is beta version 4.1.
Description

It’s the year 1571, and it’s been around a thousand years since the great war, The Crisis, ended. The world has had a long-lasting peace, but now, shady character Maxime has founded an organization for his mysterious plans – to collect magical Elemental Orbs that no one else seems to know about.

A year later, archaeologists, working for the university of The Capital, discover interesting writing in Rocky Mountain. The writing describes the same Elemental Orbs Maxime had already known about. One thing leads to another, and eventually, the main character and his classmate end up journeying to the Rocky Mountain in order to help the university do research on the Elemental Orbs. Little did they know, their simple task was yet to become an epic and hazardous adventure…

There’s not much listed about the features, but the basic elements from Silver and Gen 2 are present. It does have side quests and other things, which will be listed below.

Features
Original Story
Explore Suden
Gen 2 Pokemon roster available
Side Quests available
Traded Pokemon will always obey regardless
No Need to Trade Evolve

If you have any questions, please let me know!
Thanks for checking out my listing.