Quick controls
- Tap / click
- Pick a glass, then tap the glass to pour into
- 1–9
- Pick a glass by its number
- ← →
- Move focus between glasses
- UZBackspace
- Undo the last pour
- H
- Show a hint
- R
- Restart the puzzle (asks first)
- L
- Open the level list
- Esc
- Drop the selected glass
What is Glowdrop Lab?
Glowdrop Lab is a water sort puzzle game where you tap a glass of glowing liquid, then tap another to pour, until every glass holds one color. Its 36 puzzles are grouped into six collections of six, from First Light to Moonlit Lab, and the board gains a color every five levels: 2 colors in 4 glasses at the start, 7 colors in 9 glasses from level 26. Each layer carries a shape, like a circle on coral or a star on peach, and level 1 lights up its very first pour for you, which makes this a gentle first water sort for younger players.