The Unova Link is a feature in Pokémon Black and White Versions 2. It has three links that allow players to link together and obtain various features.
Key Link[]
Key Link allows players to connect between Pokémon Black and White Versions 2 and obtain keys that unlock various features, such as changing the difficulty level. These keys can be sent to other players, regardless of how far they have progressed in the game. Upon loading a saved file, the player will be notified if a feature is turned on.
| Mode | Description | Method | Version |
|---|---|---|---|
| Difficulty level | |||
| Normal Mode | Standard gameplay | Already obtained |  
|
| Assist/Easy Mode | Decreases the opponent's Pokémon levels and AI | Defeat Iris |
|
| Challenge Mode | Increases the opponent's Pokémon levels and AI | Defeat Iris |
|
| Location changes | |||
| Black City | Changes White Forest to Black City* | Already obtained |
|
| White Forest | Changes Black City to White Forest* | Already obtained |
|
| Ruin changes | |||
| Rockhead Key | Changes the Underground Ruins for Regirock | Already obtained |
|
| Iceberg Key | Changes the Underground Ruins for Regice | Capture Regirock* |
|
| Steel Head Key | Changes the Underground Ruins for Registeel | Capture Regirock* |
|
Assist/Easy Mode[]
Assist/Easy Mode allows players to change the difficulty settings to easy. When this mode is turned on, the opponent's Pokémon levels and AI will decrease. Assist/Easy Mode can be unlocked in Pokémon White Version 2 after defeating the Champion, Iris.
Challenge Mode[]
Challenge Mode allows players to change the difficulty settings to hard. When Challenge Mode is turned on, the opponent's Pokémon levels and AI will increase. Additionally, Gym Leader and the Elite Four will have an additional Pokémon added into their team, as well as moves changing and the Pokémon's holding item. Challenge Mode can be unlocked in Pokémon Black Version 2 after defeating the Champion, Iris.
Memory Link[]
Memory Link allows players to collect data from Pokémon Black and White and insert it to Pokémon Black and White Versions 2. This allows Pokémon Black and White Versions 2 to obtain information from the predecessors, such as past events. Memory Link may be done via local wireless or Nintendo Wi-Fi Connection.
Events[]
| Event | Location |
|---|---|
| In Striaton City, the player may listen to Cilan, Chili, and Cress's emotions. | Striaton City |
| In Route 5, Cheren will be present reminiscing about his adventures. He will then battle the player using the team according to the ones in the linked Pokémon Black or Pokémon White. | Route 5 (Unova) |
| Upon entering Nuvema Town, Bianca will appear who will reminiscence about taking her first step in her adventure. She will then battle the player using the team according to the ones in the linked Pokémon Black or Pokémon White. | Nuvema Town |
| N's Pokémon will appear in various locations which will be noticed by the way the Pokémon are encountered in the wild. These Pokémon cannot be renamed and will have N as original trainer. | |
| A flashback is activated when the player returns to Rood's house after the player beats Colress in the Pokémon World Tournament. | Driftveil City |
Nintendo 3DS Link[]
The Nintendo 3DS Link allows players to transfer Pokémon and items from Pokémon Dream Radar into Pokémon Black and White Versions 2. This allows the player to obtain the "Therian Formes" of Tornadus, Thundurus, and Landorus.