User blog comment:MegaToon1234/Super Smash Bros. Online/@comment-24741672-20150216023235

There are also stages too.: http://web.archive.org/web/20080507005843/http://www.smashbrothersonline.com/StagePages/stageselect.html

In terms of stages from the same site as the above entry, there's Mushroom Kingdom 1-2, Mansion Hallways, DK Arcade, and Balloon Party. In addition, Rayquaza ended up being a boss in Brawl.