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Ball Physics

Color Takeover

Set the colour mix of 100 balls and watch them merge one by one into a single blended ball.

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About

Color Takeover starts with 100 balls in a square box, divided between up to ten colours by percentages you set, where 1% is one ball. You can pick each colour, give it a short name, adjust shares with plus and minus buttons, or split them evenly. When the total is exactly 100%, press Play.

Every ball moves in a straight line at the same steady speed. When two touch, the bigger one swallows the smaller, their areas add, and the survivor grows smoothly to its new size. Its colour becomes the average of every original ball inside it, weighted by count. Only one merge can happen every 0.3 seconds, so the box winds down ball by ball, usually in under a minute, until one large ball remains. Counters show balls left, merges and the biggest ball's share. Merges play piano notes that drop lower as balls grow, and a final sound marks the finish.

How to Play

  1. Add up to 10 colours, tap each swatch to choose its colour, and optionally type a name.
  2. Set each share with the plus and minus buttons or tap Split Evenly; the total must be exactly 100%.
  3. Press Play and watch the balls merge one at a time.
  4. Press RESET to return to the setup card and try a new mix.

Tips

  • The last ball's colour is the weighted average of your starting mix, so you can predict it; the merge order only changes the journey.
  • Colours are averaged channel by channel, so equal amounts of opposite colours, such as red and cyan, end up close to grey.
  • A small share of a strong colour, such as 10% black, noticeably darkens the final ball.
  • Bounce notes only start once five balls are left, so the end of each run is the most musical part.

Details

Category
Ball Physics
Layout
square

100 balls, one result

Color Takeover starts with 100 balls in a square box. You divide them between up to ten colours by setting percentages, where 1% is one ball. You can pick each colour, give it a short name, adjust shares with plus and minus buttons, or split them evenly. When the total is exactly 100%, press Play.

How the merging works

Every ball moves in a straight line at the same steady speed. When two touch, the bigger one swallows the smaller, their areas add up, and the survivor grows smoothly to its new size. Its colour becomes the average of every original ball inside it, weighted by count.

Only one merge can happen every 0.3 seconds, so the box winds down ball by ball, usually in under a minute, until one large ball remains. Counters show the balls left, the merges so far and the biggest ball's share.

Predicting the final colour

The last ball's colour is the weighted average of your starting mix, so you can predict it before you press Play. The order of the merges only changes the journey. Colours are averaged channel by channel, so equal amounts of opposite colours, such as red and cyan, end up close to grey, and a small share of a strong colour, such as 10% black, noticeably darkens the final ball.

Merges play piano notes that drop lower as the balls grow, and the bounce notes only start once five balls are left, so the end of every run is the most musical part. A final sound marks the finish, and RESET takes you back to the setup card to try a new mix.

Frequently asked questions

How many colours can I use?
Up to ten, with the shares adding up to exactly 100%.
Does the order of merging change the final colour?
No. The final colour is the weighted average of your starting mix. The order only changes how the run looks.
How long does a run take?
Usually under a minute.

Guides and articles

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