A possible summary is:
Two YouTubers, Skeppy and BadBoyHalo, trap 100 kids in an upside-down Minecraft world and mess with them by changing the blocks, turning on PvP, clearing their inventories, and making the bedrock smaller. They also participate in the event but die twice each. The last survivor is a guy with a wooden sword who kills many others. They end the video by joking about doing a sideways world next.
Here are the key facts extracted from the text:
1. The event was an upside-down world with 150 kids participating.
2. The participants were given 25 dirt to start with.
3. The event started with a countdown from 3, 2, 1.
4. PvP (player versus player) was initially turned off.
5. The participants had to navigate an upside-down world with a reversed gravity system.
6. The bedrock level was at the top of the world.
7. Participants had to collect resources, including iron and wood.
8. Some participants were trapped in a jail made of stone.
9. The game moderators, Skippy and Bad, controlled the game and made changes to the environment, including replacing stone with TNT.
10. Skippy and Bad also controlled the participants' inventories, clearing them at one point.
11. PvP was turned on later in the game, and participants had to fight each other.
12. The game moderators also made changes to the environment, including replacing blocks with air, to make it harder for participants to survive.
13. A participant nicknamed "wood sword guy" emerged as a winner, having killed many other participants with a wooden sword.
14. The game ended after about 2 minutes of PvP, with the last participant standing declared the winner.