When he had been seemingly shunted into non-existence after a battle with his son Orion, in fact Darkseid was sent to Earth-Two where he met members of the Injustice Society. Seeing a new universe separate from New Genesis, the malevolent master of malice attempted to shift Apokolips into position where Earth-Two existed, destroying the latter world and securing an entire universe with which he could plunder.
This was not the first occasion when Earth-Two had been threatened, as the alien world of Asgard infringed on this planet in 1945 due to the machinations of that world's Adolph Hitler in his last ditch effort to seek vengeance against his opponents. The Justice Society of two world's defeated him, as a future version of the Society merged with Asgardians to carry on a fight with Darkseid's doppleganger as had the New Genesisians decades later.
Then, in an alternate timeline where the Multiverse was reconstituted, another Earth-Two and Apokolips faced one another, and in this reality Darkseid's world in fact entered Earth-Two's universe and destroyed that planet... despite the best efforts of a third Justice Society. Or was it?