From publisher blurb:
Cosmic Characters and Amazing Aliens
The Alien Codex
brings you an incredible array of playable races, iconic heroes, and a mountain of ready-to-play sci-fi NPCs for your Starfinder Roleplaying Game campaign! Whether playing in the official setting or a sci-fi saga like the Legendary Planet Adventure Path or in the Aethera Campaign Setting, in this incredible astro-adventuring accessory you’ll find:
- Rules for over 50 species and how to use them in a Starfinder campaign, from classics like humans and halflings to aquatic, bestial, and reptilian races, psychic species, animate plants, and mechanical beings, and more.
- Full writeups on over three dozen fully detailed playable races, including unique racial abilities, class options, gear, and more. .
- Over 100 feats, spells, magic items, class features, gear, archetypes, and more rules elements to flesh out these creatures.
- Over 150 ready-to-play stat blocks and templates from CR 1/2 to 20+, from convoy drivers and okanta pilots to klaven marines, hetzuud void sorcerers, auttaine legion commanders, and ultari techlords!
- You also get nearly a dozen richly detailed iconic heroes, with vividly developed character histories and backgrounds and multiple versions of stat blocks from low level on up!
- Half a dozen appendices packed full of high-tech armor and weapons, alien viruses, aetherite rules, languages, creature and rule indices, and more!