The 3rd Dimension

Thano's snap has sent the world spiraling back into the dark ages when very little technology was around. The snap had killed most of the avengers along with some humans. A odd black dot in the sky ad began forming slowly over the worlds broken atmosphere. Slowly as time went on things began to appear in the world. The dot became bigger and bigger until it was categorized as a black hole and everyone was required to stay in doors, not taking their oxygen helmets and suits off (had to do this because due to the atmosphere being destroyed life on earth was harmful without using space suits.... so basically they are living in space but just on earth). The scientist were right... it was a black hole but a reversed black hole. More and More things began to appear back and as time went on so did the memories of everyone. Superheros, humans, and villains who had been trapped in alternate universes began to reappear. The atmosphere had popped with a icy rage and suddenly the atmosphere had been healed. Time skipped forward to 2025 when everyone's memories were back and everything was back to the way it was before the snap. All the superheros and villains were now all back (except the ones who were snapped away in the battle of 2018.) The black hole had resided a little but was still hanging outside of the atmosphere. In the other 1st Dimension's, You have the spider-verses and the 2nd Dimension you have the transformer-verse. They will be taken through a portal to the dimension which the "black hole" is at.