"Toss ground troops in a direction you choose. Heave ho!"
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Summary
The Push Trap is a trap in the Builder Base.
It pushes ground units through the air that are within its unit capacity, and has no effect on air units.
It does no damage to units alone.
Upgrading the Push Trap only increases the number of unit capacity it pushes.
The Push Trap, like any other trap in the Builder Base, does not need to be re-armed.
The Push Trap does not need the Master Builder for construction, however, the Master Builder is required for upgrading.
The Push Trap can affect a certain number of ground troops, determined by its spring capacity. The spring capacity is the total spring weights of the units on top of the trap.
While game files reveal that the Battle Machine has a spring weight of 25, Push Traps have no effect on the Battle Machine even if its spring capacity is greater than or equal to 25.
Try to push units into hazardous areas such as a Spring Trap, a Mega Mine or high-damaging buildings like the Crusher to do more damage to them.
You can use the Push Trap to push units into an empty space surrounded by walls to trap them inside.
Push Traps can be carefully placed to push enemies into another push trap. This is best done to high value Troops, like the Boxer Giant, to effectively stall an attack.
This also uses a lot of push traps, and is not recommended as there are better uses than putting multiple push traps.
You can purposefully upgrade a few push traps and use them to push units onto a lower level Push Trap. The higher level push trap would push more troops than the lower level push trap, effectively splitting up your opponent's units as some units cannot be pushed by the lower level one.
Offensive Strategy
When going against this trap, try to use one expendable unit, such as a Raged Barbarian, to trigger this trap.
The push trap remains hidden before triggered, so you would have to predict where it is.
You can use the Battle Machine to trigger push traps as it does not affect it.
Upgrade Differences
At level 1, it appears to be 3 uneven wooden board held up by a spring with a carved arrow.
At level 2, there are four nails screwed in at each corner.
At level 3, the arrow in the middle is now metal and the wooden planks appear to have been joined.
At level 4, the corners are now metallic, covering the nails.
At level 5, the corners connect through metallic stripes, and the nails are now white in color.
At level 6, the metallic stripes disappear and it becomes a golden version of level 4, but the nails do not change
At level 7, the corners connect through golden stripes, and looks like a golden version of level 5
Trivia
Although the Push Trap is rotated 90 degrees each time, it uses the Air Sweepers smaller rotation icon (the Air Sweeper rotates 45 degrees each time), rather than the Walls right angle rotation icon.
Icon Descriptions
Tapping this icon displays information about the Push Trap, such as Level, Damage Type and Targets.
Tapping this icon begins upgrading the Push Trap to the next level, if you have enough resources and a free Master Builder or O.T.T.O. When the Push Trap is at maximum level, this icon is not shown.
Tapping this icon instantly upgrades the Push Trap to the next level, at the cost of one Hammer of Building if you have one. When the Push Trap is at maximum level, or the Builder Hall requirements for the next level are not met, this icon is not shown.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of the displayed number of Gems.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Building. This icon is only shown if you have at least one Book of Building.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Everything. This icon is only shown if you have at least one Book of Everything but do not have a Book of Building.
Tapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.
Tapping this icon rotates the Push Trap 90 degrees clockwise.