Pokemon Uranium Mega Stones: Locations, Key Stones & Mega Evolution Guide

Pokemon Uranium mega stones turn a handful of Tandor's toughest fighters into battle-ending powerhouses — but only if you know where to find them and which Pokémon can actually use them. Unlike the mainline Pokémon games, this fan-made RPG ties nearly every usable stone to a specific shop counter or a one-time story reward, so a little planning saves hours of backtracking. This guide covers the confirmed Pokemon Uranium mega stones locations, the free stone Vaeryn hands out at the Snowbank Town Gym, and the battle rules that decide when you can actually trigger the transformation.

If you are building a late-game team around Metalynx, Archilles, or one of Tandor's stranger forms, the difference between holding a Mega Stone and leaving it buried in your bag is enormous. Mega Evolution in Uranium is not just a cosmetic glow — it rewrites stats, can hand your Pokémon an entirely new ability, and often decides the outcome of a gym rematch or a brutal route boss. Get the stone, learn the timing, and your team stops being "good enough" and starts being genuinely scary.

How Mega Evolution Works in Pokemon Uranium

Mega Evolution is an extra, temporary evolution layered on top of a Pokémon's normal form. It changes the sprite, boosts stats for the duration of the fight, and occasionally swaps in a brand-new ability. The catch is that it only lasts until the battle ends or the Pokémon faints — and if your Mega-Evolved Pokémon goes down, it reverts to its original form and cannot Mega Evolve again in that same battle.

Activation requires two things at once: the trainer must hold a Key Stone, and the Pokémon must hold its own species-specific Mega Stone. In Uranium, your Key Stone is the Mega Bracelet, and you receive it as part of the story rather than buying it. That means you can own every stone in Tandor and still do nothing with them until the bracelet is on your wrist.

The one-per-battle rule is the part most players underestimate. You cannot Mega Evolve a second Pokémon after the first one faints, and you cannot "re-Mega" the same Pokémon later in the fight. Treat the transformation as a single, irreversible commitment — pick the matchup you most need to win.

Where to Get Pokemon Uranium Mega Stones

The fastest route to your first stone is the Snowbank Town Gym. Defeat Vaeryn there and he rewards you with the Mega Bracelet plus one free Mega Stone that matches a Pokémon already in your party. Community reports note that the free stone is chosen based on what you are carrying, so if you are chasing a specific stone for free, bring the right Pokémon into that fight.

For everything else, the Bealbeach Department Store is your best friend. The 5th floor stocks stones on a rotating schedule by day of the week, which means a Tuesday shopping trip can leave you empty-handed while a Monday visit gets you exactly what you need. According to the community-maintained Pokémon Uranium Wiki, Metalynxite appears on Wednesdays and Archillesite on Mondays.

That last row matters more than it looks. Before patch 1.0.2, the only way to obtain an Unidentified Fallen Object — the item needed to Mega Evolve S51-A — was Vaeryn's gift. In the latest release, every usable stone can be found somewhere in Tandor, so a missed gift is no longer a permanent loss. If you are on an old save, check your version before assuming a stone is gone forever.

For a broader primer on how the mechanic works across the franchise, the official Pokémon website is a useful reference point, though Uranium adds its own regional twists. If you want the community's running documentation, the Pokémon Uranium Wiki's Mega Evolution page is where most of this data is tracked and updated.

The Confirmed Mega Stones and Their Pokémon

Uranium's Mega roster is small compared to the mainline games, which is actually good news: you can memorize the whole list in a minute. The two best-documented stones are tied to the game's most popular early picks, and both are bought rather than found.

Metalynx keeps its Grass/Steel typing after Mega Evolving but trades Battle Armor for Heatproof. That trade is a deliberate fix: Battle Armor blocks critical hits, which is nice, but Heatproof halves Fire damage, patching the single biggest hole in a Steel-type's defenses. Against Fire-heavy trainers, a Mega Metalynx can suddenly eat hits that would have ended the fight.

Archilles goes the other direction. It keeps Fire/Ground and swaps Flame Body for Drought, which summons harsh sunlight for the rest of the battle. Sunlight boosts Fire moves and weakens Water attacks, so a Mega Archilles is less of a wall and more of a win condition. Pair it with a sun-friendly moveset and you can close out a gym fight in a handful of turns.

Pokemon Uranium Mega Stones Vaeryn Will Not Give You

One important limitation: Vaeryn cannot provide stones for S51-A Mothership Form, Dark Dramsama, or Garlikid. No amount of party arrangement changes that. If you show up at the Snowbank Town Gym hoping for one of those, you will walk away with a different stone entirely.

S51-A is the notable case because it uses the Unidentified Fallen Object rather than a standard Mega Stone. On current versions, that item and the other special-form requirements can be located in the world, which is why so many older forum posts about "the only way to get it" are now outdated.

Community reports suggest these special transformations are tied to specific story beats or side content rather than a simple shop purchase, so it pays to check a current guide before committing hours to a hunt. If you are mid-playthrough, finish the main story first — several of these items are far easier to grab once you have full access to Tandor.

Battle Impact: Stats, Weight, and Strategy Tips

Mega Evolution in Uranium does not change any Pokémon's height, but it does change weight for at least some species. That is not just trivia — weight interacts with certain moves, so a heavier Mega form can matter in edge cases.

Beyond the numbers, the practical edge comes from how you deploy the transformation. A few habits separate players who get value from Pokemon Uranium mega stones and players who waste them:

• Shop on the correct weekday. Metalynxite and Archillesite are only on the 5F counter on their scheduled days. Mark Wednesday and Monday in your head before you fly to Bealbeach.
• Decide your Mega before the battle starts. Since only one Pokémon can transform per fight, build the rest of your team around supporting that one pick.
• Save before gym leaders. The revert-on-faint rule means a badly timed Mega Evolution can cost you the whole battle. A quick reset is cheaper than a long trek back.
• Match the ability to the matchup. Heatproof on Metalynx shines against Fire specialists; Drought on Archilles shines when you want to spam Fire moves in sunlight.
• Do not Mega Evolve a Pokémon that is already low. Transform on a healthy switch-in so the boosted stats actually get used.
• Check your game version. If you are on an older patch, some stone sources described in current guides may not exist yet on your save.

Players who plan around these rules usually find that a single well-timed Mega Evolution is worth more than a full team of six ordinary attackers — which is exactly the design intent.

FAQ

How many mega stones are in Pokemon Uranium?

The community-documented list is short. Metalynxite and Archillesite are the two clearly documented store-bought stones, and additional special items handle transformations like S51-A's Mothership Form. Because the game received updates, treat older video guides as a starting point and verify against a current wiki.

Where do you get Pokemon Uranium mega stones for free?

Defeat Vaeryn at the Snowbank Town Gym. He gives you the Mega Bracelet — your Key Stone — plus one free Mega Stone that matches a Pokémon in your party at the time. Bring the Pokémon you actually want to Mega Evolve if you are hoping for a specific stone.

Can you Mega Evolve more than one Pokémon in a single battle?

No. Only one Pokémon can Mega Evolve per battle, and if that Pokémon faints, it reverts to its original form and cannot Mega Evolve again for the rest of that fight. Choose your moment carefully.

Does Mega Evolution change height or weight in Uranium?

Height stays the same. Weight does change for some species — Metalynx goes from 125 kg (275.5 lbs) to 146.5 kg (323 lbs), and Archilles goes from 85.5 kg (188.5 lbs) to 88.7 kg (195.6 lbs).

With the locations mapped, the weekday schedule noted, and the one-per-battle rule understood, collecting Pokemon Uranium mega stones stops being a scavenger hunt and becomes a straightforward checklist. Grab the bracelet, buy your stone on the right day, and save the transformation for the moment it actually wins you the fight.