Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Players aren't directly playing as Altair, they're playing as Desmond Miles, who is playing as Altair via the Animus.
Source: https://gamerant.com/games-best-hidden-loading-screens/
The same is true for how the movie dives deep into its Animus technology without a proper primer.