The Big Bridge (S2) is the South hub that opens after you play the Yellow Music Box from The Grasslands. Use the finder below for every Gray, Red, Green, and Blue chest plus all eight Musical Coins—with exact room-map links for Day/Night and each map variant. First priority is the Gray Chest Magic Seeds, which rewrites three early mid-game layouts.
FIRST CLEAR PRIORITY
Open the Gray Chest for Magic Seeds, then grab Cyan Crayon and plan Lantern
Carry the Gray Key in the room family 0 / 6 / 10 / 20 / 23 / 25 to the Gray Chest in the same family and take Magic Seeds. On the same visit, clear the Red Cyan Crayon in room 13 for the golf crayon set. Leave Pocket Pet and Lantern for clean-up if those routes still feel gated, but keep Lantern on your mid/late list so Magical Flame can open Castle of Illusions later.
S2 CHECKLIST · THE BIG BRIDGE
The Big Bridge Finder
0 / 12 targets marked · browser checklist only
Map links open the Room & Target Index for this level. Match Day/Night and variant to your overworld state. Later variants can move some routes, but chest colors and treasure rewards stay the same. Progress is stored only in this browser.
ALL FOUR CHESTS · S2
The Big Bridge treasures by chest color
Each chest needs its matching key color in the same level. Colors are not unlocked globally—if you drop a key, go back and pick it up again. Room numbers below match the default Day layout unless noted; open the map link for live markers on your current Day/Night and variant.
| Chest | Treasure | Key rooms | Chest room | What it does | Map |
|---|---|---|---|---|---|
| Gray / Grey | Magic Seeds |
0, 6, 10, 20, 23, 25 | 0, 6, 10, 20, 23, 25 | Layout key for Grasslands V2, Pool of Rain V2, and Vast Plain V3. Strong first-visit prize. | Open Gray Chest map |
| Red |  Cyan Crayon |
13 | 13 | One of seven crayons that color the Golf Building on the North–West border. Not required for the Music Box ending. | Open Red Chest map |
| Green |  Pocket Pet |
15 | 5, 24 | Perfect-completion treasure. Key in room 15; Green Chest appears in rooms 5 and 24 on the default Day layout. | Open Green Chest map |
| Blue |  Lantern |
1 | 11 | Pairs with Magical Flame (E2 Green Chest) to reveal E3 Castle of Illusions beyond The Stagnant Swamp. | Open Blue Chest map |
MUSICAL COINS · MUSIC COINS
All 8 Musical Coins in The Big Bridge
Every level has eight Musical Coins. They are not required for the Perfect treasure screen, but finishing all 200 coins across the game unlocks Golf Building Course 4. Room numbers below match the default Day layout.
| Coin | Primary rooms | Also present in |
|---|---|---|
| Musical Coin 1 | 0 | 6, 10, 20, 23, 25 |
| Musical Coin 2 | 0 | 6, 10, 20, 23, 25 |
| Musical Coin 3 | 1 | — |
| Musical Coin 4 | 11 | — |
| Musical Coin 5 | 11 | — |
| Musical Coin 6 | 13 | — |
| Musical Coin 7 | 13 | — |
| Musical Coin 8 | 15 | — |
Open all Musical Coin markers on the Room & Target Index → · Full Musical Coins Finder for every level →
SOUTH BRIDGE ROUTE
How The Big Bridge fits the South path
Unlock S2
Clear S1 Gray Chest for the Yellow Music Box and play it on the overworld. The South route opens from The Grasslands into The Big Bridge.
Magic Seeds first
Take Magic Seeds so Grasslands, Pool of Rain, and Vast Plain gain new variants. Grab Cyan Crayon for the golf crayon set while you are here.
Hub to later South
From the bridge you later reach Steep Canyon (Trident + Yellow Book), Tower of Revival (both Skull Rings), and Cave of Flames (Green Music Box). Lantern pairs with Magical Flame for Castle of Illusions.
MAP VARIANTS · DAY & NIGHT
When The Big Bridge layout changes
S2 has four progression variants on both Day and Night. Variant 1 is available once the Yellow Music Box opens the level. Later variants open after you collect specific treasures elsewhere:
| Variant | Requirements | Notes | Map |
|---|---|---|---|
| V1 | None (level open via Yellow Music Box) | Default first visit. Magic Seeds, Cyan Crayon, Pocket Pet, and Lantern routes are mapped here. | Open Day map |
| V2 | Swimming Flippers (S3 Tower of Revival Gray Chest) | Swim layout rewrite after you unlock permanent swim and dive. | Open Day map |
| V3 | Grab Glove (S4 The Steep Canyon Gray Chest) | Grab-and-throw layout for mid-game revisits after the canyon lightning path. | Open Day map |
| V4 | Scepter (S5 Cave of Flames Gray Chest) | Late-game bridge layout after Cave of Flames opens from the Green Music Box route. | Open Day map |
FIRST VISIT ROUTE
What to do in The Big Bridge on the first clear
Enter from The Grasslands
After the Yellow Music Box opens the South path, enter S2 from The Grasslands. Lead Overalls already help if you have them from the West route.
Gray Key → Magic Seeds
Hunt the Gray Key and Gray Chest in the room 0 / 6 / 10 / 20 / 23 / 25 family, leave with Magic Seeds, and plan Grasslands / Pool of Rain / Vast Plain revisits.
Crayon, then revisit
Grab Cyan Crayon in room 13. Return later for Pocket Pet (key 15 → chests 5 / 24), Lantern (key 1 → chest 11), Musical Coins, and both golf doors.
FAQ
The Big Bridge FAQ
How do you unlock The Big Bridge?
Collect the Yellow Music Box from the Gray Chest in S1 The Grasslands and play it on the overworld. That opens the South route from The Grasslands to S2 The Big Bridge.
How do I open the Gray / Grey Chest in The Big Bridge?
Find the matching Gray Key in the room family that includes rooms 0, 6, 10, 20, 23, and 25, carry it to the Gray Chest in the same family, and open it for Magic Seeds.
What do Magic Seeds do?
They rewrite three map layouts: The Grasslands Variant 2, The Pool of Rain Variant 2, and The Vast Plain Variant 3. Use them to reopen those stages for new chest and coin routes.
What does the Cyan Crayon do?
It is one of seven crayons. Collect all seven to color the Golf Building on the North–West border and open its four fixed courses. In-level golf doors work earlier for a coin fee without the full crayon set.
What does the Pocket Pet do?
It is a Perfect-completion treasure from the Green Chest (key room 15, chest rooms 5 and 24). It is not required for the five Music Box main ending.
What does the Lantern do?
Together with Magical Flame from E2 The Frigid Sea (Green Chest), it reveals E3 Castle of Illusions beyond The Stagnant Swamp. Collecting only one half will not open the castle.
How many Musical Coins are in The Big Bridge?
Eight—the same as every other level. Use the coin table above or the full Musical Coins Finder if you are missing one for 100% side goals.
Is The Big Bridge required for the ending?
Yes as a South hub path after the Yellow Music Box. The main ending still needs all five Music Boxes and the final boss. S2 treasures support layout revisits, golf crayons, Perfect completion, and the Castle of Illusions reveal pair.
Does The Big Bridge have a boss?
The Big Bridge does not have a named boss fight. Focus on the four colored chests, eight Musical Coins, and the two in-level golf doors.