The Dungeon Master's Guide describes how one can modify existing races or create new (playable) ones. Pp. 285-287, specifically.

However, there are more official playable races than just those in the Player's Handbook. You may want to take a look at What are the playable D&D races in 5e, and where can I find them?

More broadly, the DMG is largely designed around the concept that D&D should not only allow you to create characters and adventures, but also spells, settings, races, new classes... your own game. I view it as a worked example of how to create an RPG in the D&D style. If you're looking for more than the Player's Handbook provides, the DMG likely gives some advice on how to get there.

The Dungeon Master's Guide describes how one can modify existing races or create new (playable) ones. Pp. 285-287, specifically.

However, there are more official playable races than just those in the Player's Handbook. You may want to take a look at What are the playable D&D races in 5e, and where can I find them?

More broadly, the DMG is largely designed around the concept that D&D should not only allow you to create characters and adventures, but also spells, settings, races, new classes... your own game. I view it as a worked example of how to create an RPG in the D&D style. If you're looking for more than the Player's Handbook provides, the DMG likely gives some advice on how to get there.

The Dungeon Master's Guide describes how one can modify existing races or create new (playable) ones. Pp. 285-287, specifically.

Related: What are the playable D&D races in 5e, and where can I find them?

More broadly, the DMG is largely designed around the concept that D&D should not only allow you to create characters and adventures, but also spells, settings, races, new classes... your own game. I view it as a worked example of how to create an RPG in the D&D style. If you're looking for more than the Player's Handbook provides, the DMG likely gives some advice on how to get there.

The Dungeon Master's Guide describes how one can modify existing races or create new (playable) ones. Pp. 285-287, specifically.

However, there are more official playable races than just those in the Player's Handbook. You may want to take a look at What are the playable D&D races in 5e, and where can I find them?

More broadly, the DMG is largely designed around the concept that D&D should not only allow you to create characters and adventures, but also spells, settings, races, new classes... your own game. I view it as a worked example of how to create an RPG in the D&D style. If you're looking for more than the Player's Handbook provides, the DMG likely gives some advice on how to get there.