The video discusses several video games that have secret multiplayer modes, including:
1. Devil May Cry 3 - A cooperative multiplayer mode is unlocked when a player selects the "Doppelganger" fighting style and a second player presses start on controller 2.
2. Duck Hunt - A second player can control the direction of the ducks using the arrows on their controller.
3. Portal - A split-screen mode was discovered by a player who modified the game's programming code.
4. Yume Nikki - A hidden multiplayer mode is unlocked when a player pauses the game, holds LR2, and presses up, triangle, and down.
5. Fantastic Rain - A cooperative multiplayer mode is unlocked on the Wii U version when a player places an Amiibo on the second controller.
6. Human Off Circuit - A multiplayer mode is unlocked when a player has more than one hero in their team and presses start on controller 2.
7. Grand Theft Auto: San Andreas - A multiplayer mode is unlocked when a player finds a specific icon on the map.
These secret multiplayer modes were often discovered by players who experimented with the game's mechanics and codes.
Here are the key facts extracted from the text:
1. The video discusses games with hidden multiplayer modes.
2. The game Devil May Cry 3 has a hidden multiplayer mode.
3. To access the multiplayer mode in Devil May Cry 3, players must adopt the "Doppelganger" fighting style and press start on the second controller.
4. The game Balloon Fight has a cooperative mode that can be enabled by pressing start on the second controller before the game starts.
5. The game Duck Hunt has a multiplayer mode that allows players to control the direction of the ducks using the second controller.
6. The game has a split-screen mode that can be enabled by typing a specific code.
7. The game Yew Stelphia Sacem has a multiplayer mode that can be enabled by pausing the game and pressing a specific combination of buttons.
8. The game allows players to control enemies and engage in epic ninja fights with a friend.
9. The game Fantastic Rain or Night has a multiplayer mode, but it is only available in the Wii U version.
10. To enable multiplayer mode in Fantastic Rain or Night, players must have a specific amiibo figure and place it on the GamePad.
11. The game Human Off Circuit has a multiplayer mode that can be enabled by pressing start on the second controller when there are multiple heroes in the team.
12. The game GTA: San Andreas has a hidden multiplayer mode that can be enabled by going to a specific location on the map.
13. The multiplayer mode in GTA: San Andreas allows players to choose from several characters and play together.
14. The game has a bug that can cause the camera to be shared between players, leading to confusion.
15. The game also allows players to make characters kiss each other.
16. The video was inspired by a video made by a friend of the creator.
17. The channel posts new videos every Tuesday and Saturday.