Every stage from Super Smash Land is here, to varying degrees of completeness. These stages will work on Super Smash Bros. Brawl and any Brawl mods. All nine stages have a borderless version and a version with a black border that covers up the outside of the stage. (The screenshots are a mix of both.)
All stages except Underground and Dreamland use a st_final.rel base. You can replace any stage in Brawl with any of these by getting the appropriate .rel file from lakora.us/rel.Stages marked with a Note have something missing, usually because it can't be recreated in Brawl.
You can download a ready-to-go pack with all nine stages. Just extract the .zip file to your SD card and go to Stage Builder in Brawl. (Make sure to take all the stage builder stages off your Wii first, though.)
Use a st_dxgreens.rel base. (Whispy Woods won't be animated, but the wind will still work.)
Note — no Pokémon will appear from the door
Note — the challenges do not appear
This stage needs a st_dxyorster.rel base.
Note — the characters riding warp stars do not appear
A version with platforms is now available thanks to the Brawl– team.
Note — the cannon never fires
In case you're curious, here's the code I used to generate all 9 HTML pages for each stage.