How to Play
The Goal
You're standing on an overpass with a pile of rocks (or golf balls). Cars drive by below. Drop projectiles on them to rack up damage — measured in dollars of repair cost. You've got 60 seconds, extendable through bonus events. Biggest total score wins.
Controls (Desktop)
A / D or ← →Move left/right along the bridge railing
W or ↑Hold to charge power and aim, release to throw
SpacePause / resume the round
RRestart the round (3-2-1 countdown)
Controls (Mobile)
Two large on-screen pads at the bottom for left/right movement. A dedicated THROW button to charge and release. Tap Restart / Home from the corner buttons.
The Round Timeline
0s — First throw
The 60-second clock doesn't start until you release your first rock. Move and aim freely before that.
30s — Wind kicks in
"Starting to get windy." 15–20 mph from some direction. Arrow shows it; flowing arrows through the compass show intensity.
40s — DeLorean appears
A rare time-travel Easter egg drives in. Hit it for Back in Time! +10s.
≤5s — Last throw
The banner fires and a beep-per-second cues your final throw.
Power Meter
Hold the throw button to sweep a power bar. Releasing at the top deals more damage and throws the rock further. The aim arc is visualized — lead the car.
Projectiles
🪨 Rock
Heavy. Full damage (100%). Low wind drift. Shatters on landing. Best all-around pick.
⛳ Golf Ball
65% damage but bouncier, faster, more wind drift. Chains combos and flybacks more easily.
🎳 Bowling Pin
Full damage, tumbles end-over-end, slightly floaty. Bowls through rows of traffic for giant combos — Pin Kings territory.
HUD Legend
$ ScoreTotal damage so far (top-left)
TimerRound clock (top-right)
WindCompass + MPH readout, visible after 30s (left of timer)
Pips · 3 dotsBackwards-hit progress — all 3 green = +10s bonus
Streak BoxShows your consecutive hit count + progress to the next tier. Hit 2 = HOT (2×), 5 = SUPER (5×), 10 = MEGA (10×)
⚡⚡⚡ TripleMEGA streak charge — next throw fires 3 rocks
End of Round
All in-flight rocks finish their life before the round closes out. Placement message + leaderboard entry follow.
Scoring
Master Formula
Every single hit evaluates this formula, in this exact order:
rawPoints = MIN_PAYOUT + (costMax − MIN_PAYOUT) × xMult × zMult × powerMult
basePoints = max(MIN_PAYOUT, round(rawPoints × comboMult))
points = max(MIN_PAYOUT, round(basePoints × backMult × streakMult × damageMult × wallBounceMult))
MIN_PAYOUT is $200 — any hit pays at least this, even a pure edge graze. The floor is applied twice: once after combo, once after all remaining multipliers. Multipliers stack multiplicatively in the order shown.
Vehicle Repair-Cost Table (costMax)
| Vehicle | Class | Max $ |
|---|---|---|
| Porsche 911 | Sports | $5,000 |
| BMW M3 E30 | Sports | $4,500 |
| Mazda RX-7 | Sports | $4,000 |
| Chevy Corvette | Sports | $4,000 |
| Audi RS5 | Sports | $4,000 |
| Crown Vic Interceptor | Sedan | $3,500 |
| Chevelle SS | Sedan | $3,500 |
| Hummer EV | Truck | $3,500 |
| Tesla Cybertruck | Truck | $3,500 |
| School Bus | Truck | $3,000 |
| Jeep Wrangler | SUV | $2,500 |
| Mercury Grand Marquis | Sedan | $2,000 |
| VW Golf GTI | Sedan | $2,000 |
| VW Bus | SUV | $2,000 |
| City Bus | Truck | $2,000 |
| RV | Truck | $2,000 |
| Saia Semi | Truck | $2,000 |
| Mercury Colony Park | SUV | $1,500 |
| Ford F-150 | Truck | $1,500 |
| 70s Pickup | Truck | $1,500 |
Unknown vehicles fall back by class: sports $4,000 · sedan $2,500 · suv $2,000 · truck $2,000.
Hit Position — xMult, zMult
xRatio = |rock.x − car.x| / (car.width / 2) → 0 center, 1 edge
zRatio = (rock.z − car.z) / (car.length / 2) → -1 front, +1 rear
yRatio = (rock.y − car.y) / car.height
xMult = 1 − xRatio [1.0 center → 0.0 edge]
zMult = 1.0 − zRatio × 0.3 [1.3 front → 1.0 center → 0.7 rear]
Dead-center hood hits score the full repair cost. Edge grazes collapse toward $0 (clamped by MIN_PAYOUT). Front bumpers pay 30% more than rears.
Panel Zones (yRatio + zRatio)
| Panel | Trigger |
|---|---|
| Bumper | zRatio < −0.3 |
| Hood | zRatio < 0.15 AND yRatio < 0.6 |
| Windshield | zRatio < 0.45 AND yRatio > 0.4 |
| Roof | zRatio < 0.7 |
| Trunk | otherwise |
The panel label is only for the hit log readout — the dollar math uses xMult/zMult directly, not the named panel.
Power Multiplier
powerMult = 1 + power × 2 where power ∈ [0, 1]
power 0.0
Feather drop → 1.0×
power 0.5
Mid-meter → 2.0×
power 1.0
Max-charge → 3.0×
Combo Multiplier (per-throw)
comboMult = carHits [1st car = 1×, 2nd = 2×, 3rd = 3×, … no cap]
One rock, multiple cars. Each successive car on the same projectile multiplies the hit's damage by its position in the chain. A single rock hitting 5 cars stacks 5×, 4×, 3×, 2×, 1× on the respective hits.
Streak Multiplier (cross-throw)
| Tier | Consecutive hit-throws | Multiplier |
|---|---|---|
| None | 0–1 | 1× |
| 🔥 HOT STREAK | 2–4 | 2× |
| ⚡ SUPER STREAK | 5–9 | 5× |
| 💥 MEGA STREAK | 10+ | 10× |
A "hit-throw" is any throw that scored at least one car hit. A miss (rock lands without connecting) resets the streak tier to 0. Reaching MEGA also grants a one-shot Triple Toss charge — your next throw fires three rocks in an 8° spread.
Backwards Hit 5×
backMult = 5 if (carHits ≥ 2 AND velocity.z > 2 AND !_backwardsUsed)
After hitting a car, the rock deflects. If it has positive Z velocity (moving back toward the camera) when it hits the next car, that hit scores 5×. Only one backwards hit per rock. Counts toward the backwards-trio time bonus (see below).
Wall Bounce Multiplier
wallBounceMult = wallBounceCount × 1.5
Side barriers of the highway bounce a rock back into traffic. Each bounce adds 1.5× to a running multiplier stored on the rock: 1st = 1.5×, 2nd = 3.0×, 3rd = 4.5×, and so on (no cap). Applied on every subsequent car hit by that rock. Stacks multiplicatively with streak, combo, and backwards.
Per-Projectile Damage Multiplier
| Projectile | damageMult | bounceMult | throwSpeedMult | gravityMult | windMult |
|---|---|---|---|---|---|
| 🪨 Rock | 1.00 | 1.00 | 1.00 | 1.00 | 0.50 |
| ⛳ Golf Ball | 0.65 | 1.60 | 1.15 | 1.40 | 1.00 |
| 🎳 Bowling Pin | 1.00 | 0.90 | 0.95 | 0.90 | 0.70 |
Golf balls do 65% of a rock's damage but bounce 60% harder, fly 15% faster, and fall 40% quicker (heavier effective gravity = snappier cadence). They're also blown around by wind twice as much. Rocks win on raw damage; golf balls win on combo depth and unpredictable ricochets.
Bowling pins match rocks for damage but fly a hair slower and float longer (0.9× gravity) so you can watch them tumble end-over-end. They excel at mowing laterally through a row of cars: each pin hit becomes the next car's combo multiplier, and pins keep their momentum after impact — a well-placed throw can pick up 10+ cars in one go. Wall bounces are brutal with pins since the multiplier stacks (no cap).
Flyback Bonus — +$20,000
If a rock that's already hit at least one car bounces back over the bridge deck (crosses Z = −5 going upward with Y above 6m, heading toward the camera), it's a Flyback. Flat +$20,000 bonus awarded once. Also counts as one tick toward the backwards-trio counter.
Time-Extension Bonuses
+10s · Backwards Trio
Accumulate 3 backwards hits (backwards-5× hits and flybacks both count) and the round clock gets +10s. Counter resets after each trio, so you can earn it repeatedly.
+10s · Back in Time!
The DeLorean appears once per round at the 40s-elapsed mark. Any direct hit awards +10s and plays "Back in Time!"
Worked Examples
Example 1 — Perfect Porsche hood at max power, cold start:
costMax=$5,000, xMult=1.0, zMult=1.0, powerMult=3.0, combo=1, back=1, streak=1, dmg=1, wall=1
rawPoints = 200 + (5000-200)×1×1×3 = $14,600
basePoints = 14,600 × 1 = $14,600
points = 14,600
Example 2 — Same shot but 3rd car of a combo on a SUPER streak with 1 wall bounce:
costMax=$2,500 sedan, xMult=1.0, zMult=1.0, powerMult=3.0
combo=3, streak=5, wall=1.5
rawPoints = 200 + (2500-200)×3 = $7,100
basePoints = 7100 × 3 = $21,300
points = 21,300 × 1 × 5 × 1 × 1.5 = $159,750
Example 3 — Backwards + MEGA on a truck:
costMax=$2,000, xMult=0.8, zMult=1.0, powerMult=2.5
combo=2, backMult=5, streak=10, dmg=1, wall=1
rawPoints = 200 + (2000-200)×0.8×1×2.5 = $3,800
basePoints = 3800 × 2 = $7,600
points = 7600 × 5 × 10 = $380,000
Strategy
Hi, I'm Bethany
You've got me up here on this overpass. I'm wearing something cute. You're about to be a menace to interstate traffic. Let me show you how to make me look good — with charts, because we're doing this scientifically.
🎯 Where to Aim (A Scientific Analysis)
Damage Returned Per Panel Hit
peer-reviewed by me, over brunch
Bumpers pay rent. Windshields close escrow. Trunks are for cowards.
Aim for the hood. Center hits, full payday. Edge grazes get you a pat on the back and the $200 floor. You are better than that.
The Stuff That Works Every Time
• Lead the target — I throw fast, but gravity is still gravity. Aim about a second ahead. You're not trying to hit where the bus has been — what kind of life is that?
• Chain combos through traffic — one rock, multiple cars. Each successive hit on the same throw multiplies your damage. Play for the line, not the single.
• Backwards hits are 5× — when my rock deflects forward then catches a second car moving back toward camera, that's 5× damage. Every three backwards hits adds +10s to the clock. You're welcome.
• Wall bounces stack — ricochet off the side barriers. 1st bounce = 1.5×, 2nd = 3×, 3rd = 4.5× on everything that rock hits after. No cap. I've seen a 3-bounce pin get its own IMDB page.
• Don't spray — misses reset the streak tier. Pick your shot. Take your shot. Smile for the camera.
• Chain combos through traffic — one rock, multiple cars. Each successive hit on the same throw multiplies your damage. Play for the line, not the single.
• Backwards hits are 5× — when my rock deflects forward then catches a second car moving back toward camera, that's 5× damage. Every three backwards hits adds +10s to the clock. You're welcome.
• Wall bounces stack — ricochet off the side barriers. 1st bounce = 1.5×, 2nd = 3×, 3rd = 4.5× on everything that rock hits after. No cap. I've seen a 3-bounce pin get its own IMDB page.
• Don't spray — misses reset the streak tier. Pick your shot. Take your shot. Smile for the camera.
🔥 Streak Multiplier Growth (A Love Story)
x-axis: consecutive hit-throws · y-axis: multiplier applied to every hit
Ten hit-throws in a row and I hand you a Triple Toss. Your next throw fires three rocks in an 8° fan. Spend it on a bowling-alley moment — a wide-open lane of traffic. Not a Prius in the right-most lane. Have some pride.
🚗 The DeLorean
Rare Easter egg around the 40-second mark. Hit it and the round gets +10s plus "Back in Time!" plays. Yes, it's corny. No, I'm not stopping. Great Scott.
💋 Bethany's Approval Rating by Projectile
Rock — 36% (old reliable)
Golf Ball — 33% (chaos gremlin)
Bowling Pin — 27% (showoff)
4% (threw a brick once, don't ask)
Methodology: I just made these numbers up. They're vibes-based.
🪨 Rock — My Old Reliable
Nothing ever goes out of style. Not little black dresses. Not bad decisions. Not a good rock to the windshield.
• Full 100% damage — no asterisks, no fine print.
• Half the wind drift of golf balls. When it's blowing, I'm reaching for a rock.
• Shatters on landing — one throw, one impact window. Make it count.
• Best all-around — if you can't decide, pick the rock. Indecision is for spreadsheets, not overpass vigilantism.
• Half the wind drift of golf balls. When it's blowing, I'm reaching for a rock.
• Shatters on landing — one throw, one impact window. Make it count.
• Best all-around — if you can't decide, pick the rock. Indecision is for spreadsheets, not overpass vigilantism.
⛳ Golf Ball — The Troublemaker
Where a rock is a commitment, a golf ball is a Tuesday.
• 65% damage per hit but they bounce. 1.6× bounce-energy means each hit keeps going.
• 15% faster throw, 40% heavier gravity — snappier cadence, more throws per round.
• Twice the wind drift — they blow around like gossip. Plan accordingly.
• Best for combo depth — I've seen players chain 10+ cars on one lucky ball. Chaos, delivered.
• 15% faster throw, 40% heavier gravity — snappier cadence, more throws per round.
• Twice the wind drift — they blow around like gossip. Plan accordingly.
• Best for combo depth — I've seen players chain 10+ cars on one lucky ball. Chaos, delivered.
🎳 Bowling Pin — The Showstopper
I save these for a parade.
• Full damage like the rock, but they tumble end-over-end. Watching them fly is half the point.
• 0.9× gravity, 0.95× throw speed — floatier. Give it a beat longer before you release. Or don't. Gravity loves me either way.
• Throw lateral across the lanes. The "bowling alley" comparison is not an accident, darling. Strike territory.
• Wall bounces are brutal with pins — 1.5× per bounce, and pins keep their momentum after impact. They just keep going.
• Pin Kings is a real leaderboard. You want to be on it.
• 0.9× gravity, 0.95× throw speed — floatier. Give it a beat longer before you release. Or don't. Gravity loves me either way.
• Throw lateral across the lanes. The "bowling alley" comparison is not an accident, darling. Strike territory.
• Wall bounces are brutal with pins — 1.5× per bounce, and pins keep their momentum after impact. They just keep going.
• Pin Kings is a real leaderboard. You want to be on it.
📈 Local Auto Insurance Premiums (by round duration)
Correlation is not causation. But also: yes.
Last Thing
Missing me is fine. Missing a car isn't the end of the world — the round is 60 seconds and I extend it when you do the fun stuff. Take your time, lead your shots, and don't be the kind of person who throws a bowling pin at a Prius.
Now go be a menace. I'll be up here looking cute. 💋
Credits
Produced by
NWOS
Created by
Jason Graczyk
Concept & Original Ideas
BucketHoward WootenKevin EithBen GraczykTracy FeraraKown Torlock
Programming · Design · Art
NWOS
Beta Testers
Kevin EithBucketBen GraczykOwen Gallo
Built With
Three.js
Mixamo
Blender
Laravel
MariaDB
Stripe
Special Thanks
BucketJohn O’BrienTracy Ferara
© 2026 NWOS. All rights reserved.