Note: We shouldn't discuss how to get Roms/Emulators of video games here, since there are risks with downloading Roms/Emulators from the wrong sites. Pluto said a thread about hacks would be okay.
Some of us may be fans of playing rom hacks of pokemon games, where the games are changed by the hacker (overworld, pokemon, moves, levels, storyline, etc.) to create a new experience. Yamichan made a thread about playing hacks on her livestream account but I wanted to discuss pokemon hacks in general. As an example, I downloaded a hack of Pokemon Black/White 2, which updated the game so that all 649 are in it and the trainers are more difficult. It's Pokemon Blaze Black/Volt White 2 and I'm enjoying it so far.
So if anyone wants to talk about this, then feel free.
http://www.romhacking.net/hacks/1603/ (Blaze Black/Volt White 2 Description)