A possible concise summary is:
The user is playing a game called Feed and Grow Fish with a mod that allows them to play as any creature. They try to play as a vampire leech, which is a small and weak creature that can suck the life and experience from other fish. They struggle to level up and do any damage, so they use the mod to cheat and make themselves a giant level 500 vampire leech. They spawn an army of giant vampire leeches and cause chaos in the ocean. They end the video by asking for likes, subscriptions and comments.
Here are the key facts extracted from the text:
1. The video is about playing the game "Feed and Grow Fish" with a mod that allows the player to play as any creature in the game.
2. The player is trying to play as a vampire leech, a creature that is not normally playable.
3. The player is using a mod to spawn creatures and level up their vampire leech.
4. The vampire leech has a special ability to latch onto other creatures and absorb their XP.
5. The player is trying to figure out how to use this ability to level up their vampire leech.
6. The player discovers that they can level up their vampire leech instantly by pressing a certain key combination.
7. The player is able to consume entire megalodons and gain a large amount of XP.
8. The player spawns an army of level 500 vampire leeches and watches them take over the ocean.
9. The player notes that the game is not designed for the vampire leech to survive in the normal game world.
10. The player is able to cheat and make their vampire leech extremely powerful.