There were already fortified settlements of the Urnflield Culture in Central Europe at 1300-1200 BC too.
Urnfield culture - Wikipedia
The fortications were built in some settlements as Pfostenschlitzmauer.
Pfostenschlitzmauer - Wikipedia
The Heunischenburg of the Urnfield culture at Kronach:
Heunischenburg - Wikipedia
Hünenburg bei Watenstedt
I guess the Urnfield culture will not be portrayed in the game as former theories that widescale migrations of this culture in Western and South Eastern Europe caused the Sea People invasion are disputed with good reasons.
But after Robert Drews the introduction of the slashing Naue II sword of this culture in the Mediterraenean and with it the change of warfare from chariots to bands of infantry caused at least partial the collapse of some Bronze Age states.
Urnfield culture - Wikipedia