Drop & RouteDraw a line.
Guide the drop.
Fill the tube.
Drop & Route is a physics puzzle set in a tiny chemistry lab. Colored drops fall from above, your ink line steers them into the right test tubes, and colors mix along the way.
- 150 levels
- 9 labs
- 13 languages
- Plays offline

Easy to start, satisfying to master
Every level is a small physics experiment. There is rarely only one answer, and finding the line that uses the least ink is half the fun.
Draw
Sketch a ramp, a bridge, a funnel or a wall with your finger. Ink is limited, so every stroke counts.
Drop
Gravity takes over. Drops bounce, roll and slide along your line, and merge when they touch.
Route
Fill each tube with the right color. Save ink, finish clean and beat the challenge to earn all three stars.
Inside the lab
150 levels across 9 labs. The puzzles get trickier lab by lab, until the Master Lab throws every gadget at you at once.
Mix colors
Red and blue make purple, add yellow for orange. Discover every reaction and fill your Formula Book.
Lab gadgets
Portals, heaters, fans, gravity fields, filters and sticky pads change how every drop behaves.
Three stars
Finish the level, spend less ink and complete a special challenge: no erasing, fewer lines or beat the clock.
Make it yours
Collect inks, drop skins, 9 lab themes and win effects.
Play offline
No internet needed to solve puzzles. Short levels for a coffee break, a commute or a flight.
Color-blind friendly
Turn on shapes that mark every color. Available in 13 languages.
A peek inside
Swipe through a few experiments.






See it in motion
Short clips from the lab: color recipes, failed experiments and the occasional love story between two drops.
Watch all videos →Why this game exists
My grandfather spent his life working with plants and built a small lab in his village in the 1980s. Drop & Route is my way of carrying his work forward. One of its labs is named after him.
Read the story →
Quick answers
Is Drop & Route free?
Yes. Drop & Route is free to download and play. There are optional in-app purchases (remove ads, hint and ink packs), but every level can be completed without paying.
Are there ads?
Yes, and we keep them light: a banner in the menu, an interstitial every few levels, and optional rewarded ads you can watch for extra help. A one-time purchase removes the ads.
Can I play offline?
Yes. You do not need an internet connection to solve puzzles, so it works on a flight or a commute.
Which devices does it run on?
Android phones and tablets through Google Play. The iPhone and iPad version is coming soon to the App Store.
