There's a couple succession fort currently on-going, and at least two that are in need of players. While starting a succession game is of course not prohibited in any way, I'd like to suggest trying these out so that the potential players don't spread out over a dozen forts, leading to all of them possibly perishing from lack-of-players-itis.
(mostly) on-going forts:
Mountainbreed - a succession
fort town, everything must be built above ground (
players needed/requested)
Usnuspstrasp - a succession fort in a world with almost no dwarves, the goal being to rebuild dwarven civilization (
players needed/requested)
Noob Fortress/Labortaxed - a basic no-mod fort, meant to be especially noob-friendly, has not yet started
Simple Fort - just a simple no-mod no-challenge fort
Bandithorses - the goal is to steal all the artifacts in the world
Breakfastpit - a farm-fort with the goal of feeding the world
Lostshore - a human succession fort
Earth 100AD - a succession world rather than a fort, using a projection of earth as the in-game map
Shatterfates - a succession fort where the usage of both wood and stone is strictly prohibited
half-dead forts:
Slaughterhelm - the third in a series, with two finished legacy games before it
Bloodyhells - a really long-going fort, seemingly abandoned due to FPS death
Goldsilver - a succession game in a world filled with Pokémon, due to the Pokémon mod being a thing
Throwback Fortress - a succession fort set in one of the very early Dwarf Fortress versions
I hope that helped.