A possible concise summary is:
The text is a fictional story about a game designer who creates a mini-game called Appetite that is extremely difficult and addictive. He uploads it to a parallel world where games are scarce and becomes popular overnight. He earns a lot of money from advertising revenue and decides to make another game called PlayerUnknown's Battlegrounds, which is also very hard and frustrating. He hopes to start his own game empire with his black-hearted creations.
Here are the key facts extracted from the text:
1. The text is about a game designer who creates a mentally challenging game that becomes viral and popular.
2. The game is called Appetite and it involves collecting and eliminating blocks with different icons.
3. The game has 27 levels and each level is very difficult to pass.
4. The game is free to play but requires watching ads to get props or resurrect.
5. The game attracts many players, including hard-core anchors like Daniel, who fail to pass the second level and give out red envelopes as rewards.
6. The game designer is a student majoring in game design who traveled to a parallel world that lacks good games.
7. The game designer plans to create more games, such as PlayerUnknown's Battlegrounds and Getting Over It, to start his own game empire.
8. The game designer uses the nickname Black Heart and hides his identity from his roommates and the public.