Fireboy & Watergirl
Elements · LEVEL 8 · Verified walkthrough
The Furnace Switchback
Use Fireboy to open the first two passages for Watergirl. Roll the metal ball onto cyan, then use the pink gate and red lever to reach the bottom-right exits. This room has no diamonds.
Level objective
Bring Fireboy to the orange exit in the lower right and Watergirl to the blue exit in the lower right. Both heroes must be at their own doors together.
| Campaign | Elements · 8 of 39 |
|---|---|
| Collectibles | 0 fire diamonds, 0 water diamonds. 0 marked diamonds required; 0 optional. |
| Hazards | 6 lava pools. Only your own element is safe; purple goo is dangerous to both. |
| Mechanisms | 5 plates, 1 lever, 6 moving platforms, 1 rolling stone |
| Win condition | Bring Fireboy to the orange exit in the lower right and Watergirl to the blue exit in the lower right. Both heroes must be at their own doors together. |
| Exits | Fireboy: lower right. Watergirl: lower right. |
Step-by-step walkthrough
Open the green passage
Fireboy crosses the small starting lava basin, drops onto the long floor below and returns left to the green plate. Keep him there while Watergirl crosses the opening to the right.
Open yellow from below
Fireboy crosses the long lava basin, jumps onto the far-right starting shelf and drops onto the yellow plate. Watergirl climbs from the central dry slope to the upper-right shelf, crosses the opened yellow passage and drops to Fireboy’s side.
Hold purple for the ball
Fireboy drops from the inner edge of the right-hand shelf, crosses the middle lava basin and stands on the purple plate. Watergirl returns left along the floor above him and passes the raised purple gate. Jump onto the left edge of the ball’s shelf, leaving the ball on her right.
Relay the ball across the lava
Watergirl pushes the ball right. Once she is through the purple gate, Fireboy leaves the plate and waits in the lava beneath the shelf’s right edge. Watergirl pushes the ball off the shelf so it lands just to his right. Fireboy then pushes it up the sloping lava bank and into the cyan switch well.
Descend through the cyan opening
Leave the ball in its well. Watergirl climbs the small triangular shelf above the cyan opening and drops through once the bridge has fully moved. Both heroes cross to the right, drop from the end of this floor and land on the shelf below.
Hold pink while Fireboy passes
Watergirl returns left along the lower bridge, jumps onto the higher central floor and holds the pink plate. Fireboy follows onto that floor, crosses the lava to its far-left end and drops down the left slope to the bottom floor. Walk right underneath the raised pink gate.
Lower pink to make the return crossing
Once Fireboy is on the right side of the bottom gate, Watergirl steps off pink onto dry ground. Fireboy jumps left from the bottom floor onto the small lava island. Cross left over the top of the lowered pink gate and walk through the red lever.
Enter the bottom-right doors
The red lever opens a drop in the bridge above the exits. Watergirl crosses the dry central floor to the right and drops through that opening. Fireboy returns right over the small lava island and drops to the bottom floor. Finish at the red and blue doors on the right; either character may enter first.
This route was verified in the game simulation using player controls, required diamonds, and both matching exits. It describes this version’s independently reconstructed room, not an official walkthrough.
How this room’s mechanisms work
Switch 1
upper left
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 1.
Switch 2
middle right
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 2.
Switch 3
middle right
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 4.
Switch 4
middle center
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 3.
Switch 5
lower center
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 6.
Switch 6
lower left
Walk past the handle, or use it nearby: Enter for Fireboy, E for Watergirl, or the touch Use button. Each use toggles it; it stays set after you leave.
Controls Moving platform 5.
Moving platform 1
upper left
At least one of these inputs must be active: Switch 1.
When powered, it moves right; when power is released, it returns.
Moving platform 2
upper right
At least one of these inputs must be active: Switch 2.
When powered, it moves left; when power is released, it returns.
Moving platform 3
middle left
At least one of these inputs must be active: Switch 4.
When powered, it moves up; when power is released, it returns.
Moving platform 4
middle right
At least one of these inputs must be active: Switch 3.
When powered, it moves right; when power is released, it returns.
Moving platform 5
lower right
At least one of these inputs must be active: Switch 6.
When powered, it moves right; when power is released, it returns.
Moving platform 6
lower center
At least one of these inputs must be active: Switch 5.
When powered, it moves up; when power is released, it returns.
Rolling stone 1
middle left
Push from the side to start it rolling. Slopes and gravity then guide its motion.
A rolling stone can hold a pressure plate. Follow the walkthrough’s order before releasing stones into their channels.
If you get stuck
Check the unfinished objective
The diamonds in this room are optional. If you only want to finish, bring both heroes fully inside their own matching doors.
A gate or platform moved back
A pressure plate releases when its rider or weight leaves. Keep your partner on it until you are safely across. Levers stay set after you leave; check their ON or OFF state before crossing.
You missed a moving platform
Return to safe ground and use the connected switch to bring it back. Board before your partner releases the plate or changes the lever. Avoid jumping into its underside; line up with the open shaft first.
You cannot recover safely
Pause and choose Restart level to reset both heroes, diamonds, weights, and switches. Previously completed levels stay saved. Follow the step order before moving a box or releasing a weight.
For touch controls, jumping, audio, or online connection problems, see player troubleshooting.
Level questions
How do you finish The Furnace Switchback?
Use Fireboy to open the first two passages for Watergirl. Roll the metal ball onto cyan, then use the pink gate and red lever to reach the bottom-right exits. This room has no diamonds. Bring Fireboy to the orange exit in the lower right and Watergirl to the blue exit in the lower right. Both heroes must be at their own doors together.
How many diamonds are required in The Furnace Switchback?
0 diamonds: . None are required to finish.
Which hazards are in The Furnace Switchback?
6 orange lava pools (upper center, upper right, middle left, middle center, lower left, and lower center). Fireboy can enter orange lava; Watergirl must avoid it. If either hero falls into a dangerous pool, both players restart the level.
What do the switches do in The Furnace Switchback?
Switch 1 (upper left): Controls Moving platform 1. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 2 (middle right): Controls Moving platform 2. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 3 (middle right): Controls Moving platform 4. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 4 (middle center): Controls Moving platform 3. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 5 (lower center): Controls Moving platform 6. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 6 (lower left): Controls Moving platform 5. Walk past the handle, or use it nearby: Enter for Fireboy, E for Watergirl, or the touch Use button. Each use toggles it; it stays set after you leave.