Note: This guide focuses on mainline Pokémon RPGs and the major companion games players most often ask about, including Pokémon GO and Pokémon Legends titles.

Pikachu is the face of Pokémon, the electric mouse with superstar confidence, tomato-ketchup energy, and the rare ability to make “Pika-pi!” sound like a complete business proposal. But when you actually catch one in a game, a practical question appears faster than a wild Zubat in a cave: how do you evolve Pikachu?

The simple answer is: in most Pokémon games, Pikachu evolves into Raichu when you use a Thunder Stone. There is no required level. You do not need to trade it. You do not need to walk 10,000 steps, perform a ritual under a lightning storm, or whisper “Lt. Surge was right” into your Nintendo Switch. Just open your bag, select the Thunder Stone, use it on Pikachu, and boomRaichu.

However, because Pokémon loves exceptions almost as much as it loves version exclusives, there are several important twists. In Pokémon Yellow, your starter Pikachu refuses to evolve. In Pokémon: Let’s Go, Pikachu!, your partner Pikachu also cannot evolve. In Alola, Pikachu evolves into Alolan Raichu, not regular Raichu. Special Pikachu forms, such as Cosplay Pikachu, cap Pikachu, and Gigantamax-capable Pikachu, usually cannot evolve either.

This complete guide explains how to evolve Pikachu in every game, when you should evolve it, when you should wait, and when the game simply looks you in the eye and says, “No Raichu for you today.”

The Basic Pikachu Evolution Line

Pikachu sits in the middle of a three-stage family:

• Pichu evolves into Pikachu with high friendship.
• Pikachu evolves into Raichu with a Thunder Stone.
• In Alola, Pikachu evolves into Alolan Raichu, an Electric/Psychic-type regional form.

For this article, the main focus is Pikachu into Raichu. Still, it helps to remember that if you are raising a Pichu first, you need friendship before Pikachu even enters the conversation. Once you have Pikachu, the Thunder Stone is the usual key.

How to Evolve Pikachu in Every Mainline Pokémon Game

Pokémon Red, Blue, and Green

In the original Generation I games, Pikachu evolves into Raichu when exposed to a Thunder Stone. You can use the stone at any level. The catch is that old-school stone evolutions often stop learning many level-up moves after evolving, so it is usually smart to wait until Pikachu has learned the moves you want.

Pokémon Yellow

Pokémon Yellow is the first major exception. Your starter Pikachu follows you around, reacts to you, and refuses to evolve with a Thunder Stone. This is intentional because the game was heavily inspired by Ash’s Pikachu from the anime. If you want a Raichu in Yellow, you need to trade Pikachu to another compatible Generation I game, evolve it there, and trade it back. Your loyal starter Pikachu, however, wants to remain small, loud, and marketable.

Pokémon Gold, Silver, and Crystal

In Generation II, the method returns to normal: use a Thunder Stone on Pikachu to evolve it into Raichu. These games also introduced Pichu, which evolves into Pikachu through high friendship. If you are building the full line, friendship comes first, thunder comes second.

Pokémon Ruby, Sapphire, and Emerald

In Hoenn, Pikachu again evolves with a Thunder Stone. There is no regional Raichu form in these games, so the result is regular Electric-type Raichu. Because older games have stricter move-learning limitations, consider waiting until Pikachu learns an important Electric move before evolving.

Pokémon FireRed and LeafGreen

In the Kanto remakes, Pikachu evolves with a Thunder Stone. This is one of the games where many players like to wait until Pikachu learns Thunderbolt before evolving, especially if they do not want to spend a valuable TM too early. Raichu is stronger, but patience can save resources.

Pokémon Diamond, Pearl, and Platinum

In Sinnoh, the rule remains simple. Use a Thunder Stone on Pikachu and it becomes Raichu. Pichu evolves into Pikachu with high friendship, so if you are starting from Pichu, keep it in your party, avoid letting it faint, and give it friendship-boosting attention before moving on to the Thunder Stone step.

Pokémon HeartGold and SoulSilver

These Johto remakes follow the same method: Thunder Stone equals Raichu. The main decision is timing. If you want Pikachu to learn certain moves naturally, wait. If you already have strong TMs or a move plan, evolve earlier and enjoy Raichu’s better stats.

Pokémon Black, White, Black 2, and White 2

In Unova, Pikachu still evolves with a Thunder Stone. There is no special regional form here. If your team needs speed and stronger overall stats, Raichu is the better battler. If you are keeping Pikachu for charm, nostalgia, or Light Ball strategies, that is also valid. Pokémon is serious business, but not so serious that you cannot make decisions based on vibes.

Pokémon X and Y

In Kalos, use a Thunder Stone to evolve Pikachu into regular Raichu. X and Y also made many quality-of-life systems friendlier, so move management is less painful than in the earliest games. Even so, check Pikachu’s current moves before using the stone.

Pokémon Omega Ruby and Alpha Sapphire

Regular Pikachu evolves with a Thunder Stone in ORAS, but Cosplay Pikachu cannot evolve. Cosplay Pikachu is a special form with costumes and unique contest flair. It is adorable, stylish, and apparently too busy serving runway electricity to become Raichu.

Pokémon Sun, Moon, Ultra Sun, and Ultra Moon

Alola changes the result. When Pikachu evolves with a Thunder Stone in the Alola region, it becomes Alolan Raichu. This form is Electric/Psychic-type, rides its tail like a surfboard, and looks like it knows where the best pancakes are. If you want Alolan Raichu, evolve Pikachu in Alola. If you want regular Raichu, you need to use games or transfer methods where regular Raichu is available.

Pokémon Sword and Shield

In Galar, normal Pikachu evolves into Raichu with a Thunder Stone. The big warning is Gigantamax Pikachu. Pikachu with the Gigantamax Factor cannot normally evolve. Some special gift Pikachu also fall into this category. If your Thunder Stone does not work, check whether the Pikachu is a special Gigantamax-capable one.

Pokémon Brilliant Diamond and Shining Pearl

In BDSP, Pikachu evolves into Raichu with a Thunder Stone, just like in the original Sinnoh games. There is no Alolan Raichu evolution here. Use the stone when your Pikachu has the moves you want or when your team needs a stronger Electric-type immediately.

Pokémon Legends: Arceus

In Pokémon Legends: Arceus, Pikachu evolves into Raichu when you use a Thunder Stone from your satchel. Evolution is manual in this game, so having the item is not enoughyou choose when to evolve. This is great because you can wait until the moment feels right instead of having the game interrupt you every time your Pokémon levels up.

Pokémon Scarlet and Violet

In Paldea, Pikachu evolves into regular Raichu with a Thunder Stone. Pichu evolves into Pikachu through high friendship. There is no Alola-based evolution trigger in Paldea, so using a Thunder Stone here gives you standard Electric-type Raichu. If you want Alolan Raichu, you generally need transfer availability, special events, or other compatible methods outside the basic Paldea evolution path.

Pokémon Legends: Z-A

In Pokémon Legends: Z-A, Pikachu evolves into Raichu with a Thunder Stone. The game also gives Raichu extra attention through Mega Evolution content, making Raichu more exciting than it has been in years. If you are playing Z-A, evolving Pikachu is not just a stat upgrade; it can also be part of a bigger Raichu-focused battle plan.

How to Evolve Pikachu in Pokémon: Let’s Go, Pikachu! and Let’s Go, Eevee!

This is where many players get confused. In Pokémon: Let’s Go, Pikachu!, your partner Pikachu cannot evolve. The game is built around that special Pikachu staying with you, sitting on your shoulder, learning exclusive moves, and generally acting like the world’s cutest electric celebrity.

However, wild Pikachu are different. If you catch a regular Pikachu in Let’s Go, you can evolve that Pikachu with a Thunder Stone. So the rule is simple: partner Pikachu cannot evolve, but normal Pikachu can.

How to Evolve Pikachu in Pokémon GO

In Pokémon GO, Pikachu does not use a Thunder Stone. Instead, you evolve Pikachu into Raichu using Pikachu Candy. The standard cost has traditionally been 50 Pikachu Candy. Event Pikachu may have special costumes, and some costumed Pikachu can evolve while others cannot, depending on the event rules. Always check the evolve button in-game before spending time grinding candy like a responsible electric hamster accountant.

Special Pikachu Forms That Usually Cannot Evolve

Not every Pikachu is eligible for evolution. Before blaming your Thunder Stone, check whether your Pikachu is one of these special cases:

• Starter Pikachu in Pokémon Yellow: refuses to evolve.
• Partner Pikachu in Let’s Go, Pikachu: cannot evolve.
• Cosplay Pikachu in Omega Ruby and Alpha Sapphire: cannot evolve.
• Pikachu wearing a cap: generally cannot evolve.
• Gigantamax-capable Pikachu: generally cannot evolve while it has the Gigantamax Factor.
• Certain event Pikachu in Pokémon GO: may or may not evolve depending on event rules.

When Should You Evolve Pikachu?

Early Evolution: Best for Immediate Power

If your team needs a stronger Electric-type right away, evolve Pikachu early. Raichu has better overall stats than Pikachu, especially in Speed and offensive power. This matters during story playthroughs, gym battles, boss fights, and any moment when Pikachu is bravely trying its best but also being flattened by Pokémon twice its size.

Delayed Evolution: Best for Older Games

In older Pokémon games, stone evolutions often learn fewer moves by leveling up after evolving. That means evolving too early can make Raichu miss moves Pikachu would have learned naturally. In games like FireRed and LeafGreen, many players wait until Pikachu learns Thunderbolt before using the Thunder Stone. This gives you a strong Electric move without relying too heavily on TMs.

Modern Games: Evolve When Your Moves Are Ready

Modern games are more forgiving because move reminders, relearning systems, TMs, and quality-of-life features make it easier to fix a moveset. In Scarlet, Violet, Legends: Arceus, and Legends: Z-A, you can usually evolve once Pikachu has the role you want. If you already have Thunderbolt, Nuzzle, Volt Switch, Thunder Wave, or another useful Electric move, evolving is often safe.

Keep Pikachu If You Are Using Light Ball

One major reason not to evolve Pikachu is the Light Ball. In many games, Light Ball boosts Pikachu’s offensive stats, making it much stronger than its tiny body suggests. A Light Ball Pikachu can hit surprisingly hard, although it remains fragile. Think of it as a glass cannon with cheeks.

If you do not have Light Ball, Raichu is usually more reliable. If you do have Light Ball and enjoy risky, high-damage play, Pikachu can stay useful longer than expected.

Pikachu vs. Raichu: Which Is Better?

For normal story gameplay, Raichu is usually better. It is faster, sturdier, and stronger overall. Pikachu is iconic, but Raichu is the practical evolution if you want better battle performance without relying on special items.

That said, Pikachu has unique charm and occasional advantages. It may get special moves, special forms, Light Ball strategies, or partner mechanics depending on the game. If you are playing casually, keeping Pikachu is perfectly fine. If you are trying to make battles easier, evolve it.

Alolan Raichu: When Should You Choose It?

Alolan Raichu is one of the coolest regional evolutions in Pokémon. It adds Psychic typing to Raichu’s Electric type, giving it a different offensive profile and a stylish floating-tail design. In Alola-based games, this is the natural result of evolving Pikachu with a Thunder Stone.

Choose Alolan Raichu if you want extra coverage against Fighting- and Poison-type Pokémon, enjoy fast special attackers, or simply believe your Raichu should look like it is surfing through battle on pure snack-powered confidence.

Quick Evolution Table

Common Mistakes When Evolving Pikachu

Giving Pikachu the Thunder Stone Instead of Using It

A Thunder Stone is not a held item for Pikachu. You do not give it to Pikachu and wait. You select the stone from your bag and use it directly on Pikachu. If nothing happens, you are either using it incorrectly or your Pikachu is a special form that cannot evolve.

Trying to Evolve the Wrong Pikachu

Partner Pikachu, cap Pikachu, Cosplay Pikachu, and Gigantamax Pikachu are not ordinary Pikachu. They may look like Pikachu, sound like Pikachu, and cause emotional attachment like Pikachu, but evolution mechanics treat them differently.

Evolving Too Early in Older Games

In older generations, evolving Pikachu immediately can limit natural move learning. Before you use the Thunder Stone, check what moves Pikachu will learn later. If you want Thunderbolt naturally, wait. If you already have the TM or do not care, evolve.

Extra Player Experience: What It Feels Like to Evolve Pikachu Across the Games

Evolving Pikachu is one of those Pokémon decisions that feels bigger than the mechanics suggest. On paper, it is just an item evolution. In practice, it can feel like a tiny identity crisis with a tail. Pikachu is the mascot. Pikachu is the anime hero. Pikachu is the one on lunch boxes, plushies, backpacks, cereal boxes, and probably someone’s wedding cake. Raichu, meanwhile, is the stronger evolution that has spent decades saying, “Hello? I am also here, and I brought better stats.”

In early games, evolving Pikachu feels like a strategic checkpoint. You finally find or buy a Thunder Stone, stare at your Pikachu’s moveset, and wonder whether you are about to make a genius decision or a permanent oops. Because older games are less forgiving with move relearning, the safest experience is to wait until Pikachu has learned the move you really want. For many players, that means waiting for Thunderbolt. Once Pikachu has a reliable Electric attack, evolving into Raichu feels like upgrading from a spark plug to a portable power station.

In Pokémon Yellow, the experience is totally different. The game teaches you that not every evolution is about power. Your starter Pikachu refusing the Thunder Stone is part mechanic, part personality test. It makes Pikachu feel like a companion rather than just a party slot. Sure, Raichu would be stronger, but Yellow’s Pikachu has attitude, facial expressions, and main-character privileges. The game basically says, “This Pikachu has union representation.”

In Alola, evolving Pikachu is exciting because the reward is not just Raichuit is Alolan Raichu. The Electric/Psychic typing gives the evolution a fresh identity, and the floating tail design makes it feel like Raichu finally got its own spotlight. If regular Raichu is a power upgrade, Alolan Raichu is a style upgrade too. It is the kind of Pokémon that enters battle looking like it knows both your weakness chart and your brunch order.

In modern games, the best experience is usually less stressful. Move reminders and flexible TMs mean you can evolve Pikachu earlier without feeling like you ruined your save file. In Scarlet, Violet, Legends: Arceus, and Legends: Z-A, the decision becomes more about team role. Do you need speed and stronger attacks now? Evolve. Are you using Light Ball or keeping Pikachu for personal attachment? Keep it. The game gives you more room to play your way.

My practical advice for most players is this: if you are playing an older game, wait until Pikachu learns the important moves you want. If you are playing a newer game, evolve when Raichu would actually help your team. If you are emotionally attached to Pikachu, do not let anyone bully you into evolving it. Pokémon is about strategy, yes, but it is also about forming a team you enjoy. Sometimes the best choice is Raichu. Sometimes the best choice is Pikachu with a Light Ball and heroic confidence. And sometimes the best choice is simply the one that makes you smile when the battle starts.

Conclusion

So, how do you evolve Pikachu in every game? Most of the time, the answer is beautifully simple: use a Thunder Stone. That method works across the majority of mainline Pokémon games, from the earliest Kanto adventures to modern titles like Scarlet, Violet, and Legends: Z-A.

The exceptions are what make the topic interesting. Starter Pikachu in Pokémon Yellow will not evolve. Partner Pikachu in Let’s Go, Pikachu! stays as Pikachu forever. Alola turns Pikachu into Alolan Raichu. Special forms like Cosplay Pikachu, cap Pikachu, and Gigantamax Pikachu usually cannot evolve. And in Pokémon GO, candy replaces the Thunder Stone entirely.

As for when to evolve Pikachu, the best timing depends on your game. In older titles, wait until Pikachu learns key moves. In modern games, evolve when your team needs Raichu’s stronger stats. If you are using Light Ball or simply love Pikachu, keeping it unevolved is a perfectly valid choice. After all, Pokémon is not just about winning. It is also about sending a tiny electric mouse into battle and believing, against all logic, that friendship and Thunderbolt can solve almost anything.