>>35609700Depends on Generation
Gen III:
>CloverGenerally very well made hack with a lot of old and new chan culture sprinkled in it - made by some /vp/ anons. Good stuff, if you're not into serious games. Difficulty hike, gonna be harder if you're not as experienced with the series but not impossible by any means.
>QuartzBasically a must-play stepping stone. It's by no means amazing, but it's a classic hack from the early days. It was one of the first hacks with a brand new region, new pokemon, etc etc. (though with varying quality). Only really good for a laugh.
>VegaJapanese hack - extremely high quality, plays like a whole new experience complete with new music, tiles, fakemon, bascally new-everything. Pic related. It has a pair of sequels with just as much love and care going into them.
Hope I helped.