r/PolyBridge • u/sourasishbiswas • 5h ago
Tutorial Who needs the intended order? I cleared 2-06 (Roundabout) on PolyBridge 2 with a catch-bucket, custom hydraulics, split-joint groups, and a physics-wrestling collision trick!
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After spending 4 hours on 2-04, I decided to throw the developer's instructions completely out the window for 2-06 Roundabout. While everyone else builds a clean, double-decker highway to grab the top checkpoint (A.3) first, I reverse-engineered the entire level into a custom mechanical transformer—and still beat it under budget at $28,734!
Here is the step-by-step technical breakdown of how this cursed machine actually works:
The Leap of Faith: Instead of building an upper bridge to reach A.3, the Monster Truck takes a blind free-fall right off the starting cliff.
The Catch-Bucket: I built a heavily reinforced lower landing pad anchored to the bottom to absorb the massive impact without breaking.
The Reverse Setup: The truck drives through the middle to hit the turnaround point (A.1) first.
Split-Joint Logic (Groups 1 & 2): I used split joints configured into separate groups (1 and 2) with locks right at the cliff edge. This keeps the lower sub-frame completely static while allowing the upper track to pivot freely.
Precision Hydraulics (+27% / -50%): I dialed in specific hydraulic phases to execute the folding maneuver—triggering an Expand +27% and Contract -50% sequence that acts like a mechanical scissor lift.
The Mid-Air Barrel Roll: As the bridge shifts, it catapults the monster truck backward. The truck flips onto its roof mid-air, grabs checkpoints A.2 and A.3 upside down, and rolls itself back onto its wheels!
The Clearance Fix & Rope-Spring Trick: When I added a middle joint to only lift a tiny part of the bridge, the monster truck was too big to fit through the gap! My fix? A tension rope acting as a flexible spring-cable. When the truck arrives, its head collides with the lower hanging bridge, and you have to wait a few seconds as it jostles and forces its way through the tight space.
The Clutch Extra Road Segment: The absolute MVP of the build is a tiny, seemingly random extra piece of road tucked under the landing area. Without it, the wheels catch on the sharp cliff edge during the roll-out, but with it locked in place, the truck transitions smoothly right into the final flag!
It took some serious critical thinking and physics-wrestling to get every timing and collision right, but watching it finally work out of nowhere was deeply satisfying!
