According to the map, Rome was a vast empire spreading across Europe and Asia. According to reality, the Western Empire consisted of Italy, Provence (an area in France that bordered north-west Italy) and Dalmatia (a large area in south-eastern Europe that bordered north-eastern Italy and then ran along the coast of the Adriatic Sea.
On September 4, 476, a couple of weeks after he had seized control of the Western Empire, Odoacer summoned the boy Emperor Romulus Augustus to a meeting and arrested him. A surprisingly kind man, Odoacer informed the Emperor that Italy was seceding from the Roman Empire, was now an independent nation, and Odoacer was its king.
Italy was not obliged to uphold Roman claims over German territory, thus lessening the chance that the Germans would attack. King Odoacer told a relieved Senate that they would keep their offices and authority, but they were now the Italian Senate, not the Roman Senate. Thus, the government of the Western Empire disappeared.
An Arian himself, he swore that there would be no persecution of Catholics. Trying desperately to avoid an alliance of enemies against himself, he swore loyalty to Emperor Romulus Augustus, to former Emperor Julius Nepos (who pretended to rule from Dalmatia), and even sent messengers swearing loyalty to Eastern Emperor Zeno.
The Roman army kept its ranks, but they were now the Italian Army. He pulled back troops from areas that Italy couldn't defend, strengthening Italy against future invasions and helping the economy. The Germans, Romans, Catholics, Arians, Jews, and anyone else who lived in Italy were now one people: the Italians, and they had a nation of their own to love and defend.
The question was: would the Eastern Empire let him get away with it?