Fireboy & Watergirl
Crystal · LEVEL 18 · Verified walkthrough
The Crystal Loop
Climb from the bottom through the white and purple crystal pairs, then use the green pair to collect the diamonds on both middle levels. Finish at the two doors on the left.
Level objective
Bring Fireboy to the orange exit in the middle left and Watergirl to the blue exit in the middle left. Both heroes must be at their own doors together. The 16 unmarked diamonds are optional; collect every diamond for a perfect clear.
| Campaign | The Crystal Temple · 18 of 39 |
|---|---|
| Collectibles | 8 fire diamonds, 8 water diamonds. 0 marked diamonds required; 16 optional. |
| Hazards | 3 lava pools, 3 water pools. Only your own element is safe; purple goo is dangerous to both. |
| Mechanisms | 6 portals |
| Win condition | Bring Fireboy to the orange exit in the middle left and Watergirl to the blue exit in the middle left. Both heroes must be at their own doors together. The 16 unmarked diamonds are optional; collect every diamond for a perfect clear. |
| Exits | Fireboy: middle left. Watergirl: middle left. |
Step-by-step walkthrough
Begin with the lower-left diamonds
Take one hero around the room while the other waits safely at the bottom. Watergirl first collects the blue diamond along the bottom corridor. Jump onto the right tip of the stone shelf above the starting area, then follow that shelf left. Fireboy collects the red diamond on this shelf and jumps over its blue pool.
Cross through the white crystals
Continue to the white crystal at the far-left end of the shelf. It sends you to the bottom-right corner. Watergirl collects the nearby bottom blue diamond. Climb the right-hand steps, jumping over red pools with Watergirl. Fireboy also collects the red diamond beside the central mound before continuing upward.
Climb left toward the purple crystal
Work across the next walkway from right to left. Collect Watergirl’s blue diamond on the raised right ledge and Fireboy’s red diamond beside the central stone column. Fireboy must jump over the long blue pool farther left; Watergirl can cross it and collect the blue diamond above its left approach. Follow the rising left passage to the purple crystal.
Follow the upper loop
The purple pair takes you to the upper-right corner. Travel left along the top walkway. Fireboy collects the high red diamond and crosses the red pool; Watergirl jumps over that pool and collects the high blue diamond farther left. Continue to the pointed left end, drop onto the walkway below and turn right. Fireboy collects the red diamond near the left wall, then jumps over the blue pool.
Explore the lower green-crystal branches
Continue right into the upper green crystal to arrive on the lower middle walkway. Watergirl collects the blue diamond immediately to its right. Fireboy continues across the red pool and up the right steps for the red diamond, then returns. Use the pair again to reach its left-hand branch: Fireboy collects the red diamond just left of the lower crystal, while Watergirl continues left toward the blue diamond beside the exit passage.
Collect the upper-right middle diamonds
Return to the lower green crystal from the left to reach the upper-right branch. Fireboy collects the red diamond close to the crystal. Watergirl continues right and climbs the stone ramp for the blue diamond under the upper-right roof. To change branches, move clear of a receiving crystal before entering again; jump across it when you need to approach from its other side.
Return left to both exits
Approach the upper green crystal from its right side to emerge on the lower-left branch. Follow the stone walkway left and climb its slope into the exit passage. Stop at the matching door after collecting all eight diamonds of your element. Repeat with the waiting hero to finish with all sixteen diamonds.
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
Portal 1
lower left
This portal needs no switch power.
Step inside to travel to Portal 2. Step out of the destination before trying to return.
Portal 2
lower right
This portal needs no switch power.
Step inside to travel to Portal 1. Step out of the destination before trying to return.
Portal 3
middle left
This portal needs no switch power.
Step inside to travel to Portal 4. Step out of the destination before trying to return.
Portal 4
upper right
This portal needs no switch power.
Step inside to travel to Portal 3. Step out of the destination before trying to return.
Portal 5
middle center
This portal needs no switch power.
Step inside to travel to Portal 6. Step out of the destination before trying to return.
Portal 6
upper center
This portal needs no switch power.
Step inside to travel to Portal 5. Step out of the destination before trying to return.
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.
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 Crystal Loop?
Climb from the bottom through the white and purple crystal pairs, then use the green pair to collect the diamonds on both middle levels. Finish at the two doors on the left. Bring Fireboy to the orange exit in the middle left and Watergirl to the blue exit in the middle left. Both heroes must be at their own doors together. The 16 unmarked diamonds are optional; collect every diamond for a perfect clear.
How many diamonds are required in The Crystal Loop?
16 diamonds: 8 for Fireboy and 8 for Watergirl. None are required to finish. 16 unmarked diamonds are optional collectibles for a perfect clear.
Which hazards are in The Crystal Loop?
3 orange lava pools (upper center, middle right, and lower right) and 3 blue water pools (upper left, lower center, and lower left). Fireboy can enter orange lava; Watergirl must avoid it. Watergirl can enter blue water; Fireboy must avoid it. If either hero falls into a dangerous pool, both players restart the level.
Does The Crystal Loop need a partner to hold a switch?
There are no levers or pressure plates in this room. Each hero can follow their own route, but both matching exits are still needed to finish.