🏁 100 Countries Marble Elimination — Full Plan

Overview

• 100 country-flag marbles, countryballs style (circle + flag texture)
• 7 elimination stages — each with a unique obstacle course
• ~4 minutes total (snappier than Bluza's 15 min — higher energy density)
• 1920×1080 @ 30fps, dark background (#0a0a0a), neon UI accents
• pymunk 2D physics (real gravity, collisions, elasticity, friction)
• Upload via publish_youtube.sh --privacy public

Tech Stack

• Python + pymunk + PIL + numpy + ffmpeg
• Flag images: procedurally drawn simplified flags (solid colors + basic shapes — no bitmap dependencies)
• Each marble = pymunk Circle body with flag texture baked onto it
• Camera: vertical scrolling, follows the pack

The 7 Stages

Stage 1: "The Drop" — 100 → 64

Layout: Wide funnel entrance at top → peg board (Galton board style) → 2 exit chutes at bottom. Left chute = SAFE (64 slots), Right chute = ELIMINATED (36 slots).

Obstacles:

• 12 rows of offset pegs (like a Plinko board)
• Random deflections create natural separation
• Funnel narrows toward the split point

Duration: ~40 seconds

Why it works: Pure chaos. Everyone starts together, physics decides who drifts left vs right. Viewers immediately pick favorites.

Stage 2: "The Gauntlet" — 64 → 32

Layout: Narrow vertical corridor with alternating barriers from left and right walls, creating a zigzag path. Bottom has a gate that closes after 32 pass through.

Obstacles:

• 8 alternating shelf barriers (marbles must roll off each edge)
• 2 spinning paddle wheels (static segments that deflect)
• Narrow bottleneck before the finish gate

Duration: ~35 seconds

Why it works: Tight spaces = collisions. Faster marbles get stuck behind slower ones. Dramatic pile-ups at the bottleneck.

Stage 3: "Splitsville" — 32 → 16

Layout: Track splits into 4 parallel lanes via Y-splitters. Each lane has different obstacles. Bottom 4 from each lane are eliminated.

Obstacles:

• Lane A: Bumpy terrain (small random pegs)
• Lane B: Narrow squeeze + wide valley
• Lane C: Step drops (staircase)
• Lane D: Curved funnel with central pillar

Duration: ~30 seconds

Why it works: Lane assignment feels like fate. "My country got the hard lane!" Different visual variety keeps it fresh.

Stage 4: "Pinball Madness" — 16 → 8

Layout: Full pinball-style arena. Marbles drop in from top, bounce off bumpers, flippers (static angled segments), and rubber bands. First 8 to reach the bottom exit survive.

Obstacles:

• 6 large circular bumpers (high elasticity)
• 4 angled flippers
• 3 trap pockets (marbles that fall in are eliminated)
• 1 exit chute at bottom center

Duration: ~35 seconds

Why it works: Most chaotic stage. Marbles ping everywhere. Impossible to predict. The trap pockets create gasps.

Stage 5: "The Maze" — 8 → 4

Layout: Top-down maze with multiple paths. Some paths are dead ends, some loop back. First 4 to exit the maze at the bottom survive.

Obstacles:

• 15×10 grid maze with 3 valid paths to exit
• Dead ends have slight slopes that roll marbles back
• One shortcut tunnel that only 1 marble can fit through

Duration: ~30 seconds

Why it works: Tension shifts from speed to luck-of-path. Viewers can see marbles taking wrong turns. "NO GO LEFT!"

Stage 6: "Cliff Hanger" — 4 → 2

Layout: Series of narrow platforms with gaps. Marbles must roll off one platform, freefall, and land on the next. Miss = eliminated. 5 platforms descending.

Obstacles:

• 5 platforms, each slightly offset from the one above
• Platforms get progressively narrower (wide → tiny)
• Small lip on each platform edge creates unpredictable launch angles

Duration: ~25 seconds

Why it works: High stakes. Only 4 marbles, every move is visible. Falling off is instant drama.

Stage 7: "The Final" — 2 → 1 🏆

Layout: Head-to-head race track. Two parallel lanes, mirror image. Both marbles drop simultaneously. First to cross the finish line wins.

Obstacles:

• 3 loop-de-loops (circular track segments)
• Peg section in the middle
• Final ramp into finish zone
• Slow-motion replay of the finish (last 2 seconds rendered at 0.25x speed)

Duration: ~20 seconds (+ 8 seconds slow-mo replay)

Why it works: Classic 1v1 showdown. Clean, dramatic, easy to follow. Slow-mo gives the climactic payoff.

UI Overlay

• Top bar: Stage name + "X countries remaining"
• Bottom ticker: Scrolling country flags of eliminated nations (greyed out)
• Side panel (stages 5-7): Remaining country flags with names
• Finish: Winner flag full-screen with fireworks particle effect + country name

Audio

• Procedural ambient drone (like existing renderers) with rising intensity per stage
• Each stage slightly higher pitch/tempo
• Final stage adds rhythmic pulse
• Victory: bright chord resolve

Country Selection

Top 100 countries by population, ensuring good geographic diversity. Each gets a simplified 2-3 color flag rendered procedurally (no external assets needed).

Video Metadata

Title: "100 Countries Marble Race 🌍 | Epic Elimination Tournament"
Description: "100 country-flag marbles enter. Only 1 survives. 7 stages of pure physics chaos. Which country will win? 🏆\n\nComment your country below! 🗳️"
Tags: "marble race,country flags,countryballs,elimination,marble run,physics simulation,100 countries"
Category: 24 (Entertainment)
Privacy: public

Rendering Estimate

• ~7,200 frames total (4 min × 30fps)
• At ~2 fps render speed (pymunk + PIL): ~1 hour
• ffmpeg encode: ~2 min
• Total: ~1 hour pipeline