|Game Name:||Pokemon Omega Paradox (Hack)|
Hack of Pokemon Volt White by XxAsterxX of PokeCommunity
Features new Gym Leaders, Elite Four/Champion, Trainers, Mega Evolution, added some later generation Pokemon and fakemons, increased level curve, new movesets, etc.
Also another gimmick added is Omega Evolution, which is like an extension of regular evolution. Giving Pokemon alternate forms, kinda like Alolan.
Only ones listed on the thread is Eevee, Ponyta, Grimer, and Zekrom.
Also going by the screenshots, I would think this features its own original story.
Pokemon Omega Paradox (Hack) NDS ROM Download: