Through Their Own Eyes: New Personality Features for Fantasy Races for D&D 5e presents good roleplaying tools for constructing nonhuman characters. It is entirely support for character building and is quite helpful for those interested in playing nonhuman characters.
Through Their Own Eyes: New Personality Features for Fantasy Races for D&D 5e by Brandes Stoddard and published by Tribality Publishing is what you would expect, new traits for fantasy cultures tied to the traditional type of fantasy folk. The layout is clear with thematic color photographs for illustrations.
For each dwarves, elves (surface and drow), halflings, gnomes, half-orcs, dragonborn, tieflings, aasimar, goblins, and kobolds there is a short paragraph with thoughts on their culture. Then each of either six or eight options for personality traits (gnomes get ten options here, the only ones that do), ideals, bonds, and flaws to mix and match with those from backgrounds.
The only layout issue is that the notes on aasimar culture are repeated, it is not a lot of wasted space but some more thoughts on aasimar would be interesting. While primary player oriented, a DM can get some food for thought about the nonhuman cultures in their campaign world as well.
Disclosure: As a featured reviewer for RPGNow/DriveThroughRPG, I received my copy of this product for free from the publisher for the purpose of this review. Also, Brandes is a friend of mine and one of the players in my original Sea of Stars campaign, but I like to think that did not influence this review.
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Sea of Stars RPG Design Journal 