At least a few people in the reviews are suggesting that the recent (2024) Machine Age DLC completely makes this one redundant (as Machine Age allows you to play machine empires which you needed Synthetic Dawn for before), however there's a few things exclusive to Synthetic Dawn that make it still worth getting, but maybe at discount rather than the full price:

-Determined Exterminators civic, where you play as a machine empire devoted to killing all biological life
-Driven Assimilator civic, where you play a machine hive mind that turns all biological life it conquers into hive-minded cyborgs
-Rogue Servitor civic, where you play a machine empire that values biological life as something to be pampered and cared for
-the machine uprising situation
-Resource Consolidation origin
-Machine Worlds ascension perk
-Grid Amalgamation species right
-Chemical Processing exetermination type
-Ancient Caretakers Fallen Empire

Along with some music and portraits

At least a few people in the reviews are suggesting that the recent (2024) Machine Age DLC completely makes this one redundant (as Machine Age allows you to play machine empires which you needed Synthetic Dawn for before), however there's a few things exclusive to Synthetic Dawn that make it still worth getting, but maybe at discount rather than the full price: -Determined Exterminators civic, where you play as a machine empire devoted to killing all biological life -Driven Assimilator civic, where you play a machine hive mind that turns all biological life it conquers into hive-minded cyborgs -Rogue Servitor civic, where you play a machine empire that values biological life as something to be pampered and cared for -the machine uprising situation -Resource Consolidation origin -Machine Worlds ascension perk -Grid Amalgamation species right -Chemical Processing exetermination type -Ancient Caretakers Fallen Empire Along with some music and portraits