In Pokémon Silver, your journey through the Johto region introduces you to various challenges that require clever thinking and the right tools. One of the first obstacles you’ll face is navigating through dark caves such as Dark Cave or later, Rock Tunnel. These areas are pitch black without a source of light—and that’s where HM05 Flash comes in.
Flash is a Hidden Machine that illuminates dark places, allowing you to explore areas that would otherwise be impossible to see in. While this HM isn’t needed to beat the game, it significantly improves your gameplay experience and makes exploration far smoother. To get Flash, you’ll need to visit Sprout Tower in Violet City and complete a series of events after earning your first Gym Badge. Here’s a detailed breakdown of all six steps you must follow to obtain HM05 Flash.
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Step 1: Defeat Falkner, the Violet City Gym Leader
Before you can even think about getting Flash, you must defeat Falkner, the first Gym Leader of the Johto region. Falkner specializes in Flying-type Pokémon, and his team includes:
- Pidgey (Level 7)
- Pidgeotto (Level 9)
He’s located in Violet City, which you’ll reach after traveling north from New Bark Town and passing through Route 31. Train your starter Pokémon and catch a few allies along the way to make sure your team is strong enough to handle his flying-types. Once you defeat Falkner, you’ll earn the Zephyr Badge, which is required to use Flash outside of battle.
Step 2: Go to Sprout Tower
After obtaining your first badge, it’s time to head north in Violet City to visit Sprout Tower—a multi-story pagoda filled with monks who train with Bellsprout. This place is both a test of your strength and a rite of passage for new trainers. You won’t need any HMs to explore the tower, and your main objective here is to reach the top and meet the Elder.
The tower is teeming with Sage Trainers who primarily use Grass-type Pokémon like Bellsprout and Hoothoot. These battles are great for gaining early experience and for leveling up your team before the first major caves.
Step 3: Ascend to the Third Floor
Sprout Tower consists of three floors. As you climb each level, you’ll face increasingly stronger trainers. Make sure to bring Potions or visit the Pokémon Center between fights to keep your team healthy. The tower may seem straightforward, but each floor contains tight corridors, making every battle inevitable.
Continue progressing up the tower until you reach the third and final floor. That’s where you’ll meet both your rival and the tower’s Elder, who plays an essential role in your journey to obtain Flash.
Step 4: Encounter Your Rival
At the top floor of Sprout Tower, you’ll encounter your rival—the aggressive, power-focused trainer who took the starter Pokémon that has a type advantage over yours. You won’t fight him at this point, but you’ll witness him defeating the Elder and showing complete disregard for the tower’s philosophy about trust and respect between humans and Pokémon.
After this brief encounter, he’ll leave in frustration, making way for your own battle with the Elder. This moment is key in establishing your contrasting path as a more balanced and respectful trainer.
Step 5: Battle the Elder
Once your rival leaves, Elder Li will turn his attention to you. He respects the bond between trainers and Pokémon and wishes to test your growth. His team includes:
- Bellsprout (Level 7)
- Bellsprout (Level 7)
- Hoothoot (Level 10)
This battle is more strategic than difficult. Be cautious of Hoothoot’s Hypnosis, which can put your Pokémon to sleep. Bring items like Awakenings or a Pokémon with a status-curing move. Defeating the Elder proves your readiness as a true trainer, and he will then reward your perseverance and skill.
Step 6: Collect HM05 Flash
After the battle, Elder Li will gift you HM05 Flash, the move that lights up dark caves. To use Flash outside of battle, remember—you need to have the Zephyr Badge from Falkner. Without it, the move won’t function in the overworld.
Flash can be taught to a variety of Pokémon such as Bellsprout, Mareep, Hoothoot, and others. Teaching it to a non-essential team member is advised since it doesn’t offer battle advantages. Once equipped, you can now safely explore Dark Cave, Ruins of Alph, and other pitch-black areas that previously seemed impossible to navigate.
Conclusion: Shine a Light on Johto’s Darkest Paths
Getting HM05 Flash in Pokémon Silver is one of the first strategic milestones in your journey. It requires beating the Violet City Gym, navigating Sprout Tower, and passing a moral and battle-based trial with Elder Li. But the reward—a practical and essential tool—makes your efforts worth it.
Flash may seem like a small part of the game, but it unlocks many paths and secrets hidden within Johto. As you continue your quest to become Pokémon Champion, having this utility move will illuminate more than just caves—it will also light the path of your progress as a skilled and thoughtful trainer.
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