I'm trying to start making WorldA maps with pixel art, so I thought it's best to start small with this map to get used to it. This took me some hours to do which was longer than I expected. Questions and comments are appreciated!
The POD is that Alexander's close companion Hephaistion avoids his early death. Alexander thus avoids his Achilles-style actions in mourning Hephaistion and lives for many more years.
He abandons India as in OTL (where Chandragupta soon builds an empire there, forging friendly relations with Macedonia in the process) and builds a massive fleet for an Arabian campaign subjugating the coasts and installing pro-Macedonian tributaries there. After some time here, he campaigns in Magna Graecia. The various cities there proclaim him hegemon. He then goes to war with the Samnites, allying with Rome to take revenge on the people who killed his uncle. After some later action in Sicily doing the same, his large fleet sails to Carthage. After some skirmishes, the Carthaginians are intimidated so much they agree to accept Alexander as hegemon. The other Greek and Punic cities in the western Mediterranean eventually follow.
Finally, Alexander sails for the Pillars of Hercules, where he and his army weep, for now
, there are no more worlds to conquer.
He spends the rest of his reign with administration and building various cities like the dual capitals of Babylon and Alexandria. By 288 B.C., Alexander dies, having achieved legendary success and is set to be deified during the reign of his adult son and successor. Alexander's long reign begins a melding of Greek and Persian and other cultures. A different Hellenistic era is on the horizon.