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Hide a staircase under trapdoors that open in a wave with one lever.
The lab floor looks totally normal. Pull a hidden lever and it ripples open, tile by tile, into the dark.
- New skill Opening trapdoors with timed repeaters
- Level 6 · Inventor's Lab
- Difficulty Intermediate
- Mode Creative
- Time 45–60 min
- Ages 13+
What you’ll build
Dig a hidden staircase down to a secret basement and cover the top with trapdoors that look just like the floor. Wire them through a tunnel of repeaters with different delays, so one pull of a lever makes the hatch ripple open in a wave.
Finish line: Your floor ripples open, tile by tile, into a hidden staircase down to your secret basement.
Bonus challenge: Add a second hidden lever down in the basement, wired into the same dust, so the hatch opens from below too. What happens if both are on?
You’ll need
- Wooden trapdoors
- Matching floor planks
- Repeaters
- Redstone dust
- A lever
You choose
- My secret basement's name
- Floor style that hides the hatch best
- What waits at the bottom of the stairs
Stuck?
- Trapdoors sticking up? Tap the upper half of a block's side to place them flush in the top half.
- A trapdoor won't open? The repeater must point into the block right beside that trapdoor.
- Tap a repeater to change its delay. Each tap adds a tick, up to 4.
For grown-ups
Get this mission
This mission is in Mission Pack 51. Each printable has the full steps, a Plan & Log page and a parent page.
Print one mission at a time. You never need to print everything.
Played on Minecraft Bedrock on iPad. Buttons can differ on other devices and versions.