ONE ANSWER. A CHAIN REACTION.
Most Populated Answer: R Countries
Name a R country. Unlock it and every less-populated R country. Can you clear the list in 30 seconds?
Browse both alphabet challenges
COUNTRIES UNLOCKED0 / 3
TIME LEFT30s
How big can you think?
You have 30 seconds. Each answer reveals itself and every less-populated R country. Keep guessing to unlock more.
COUNTRYPOPULATION ESTIMATE
1
?Country hidden
140,134,279people · 20252
?Country hidden
18,148,155people · 20243
?Country hidden
13,623,302people · 2024Finding your next challenge…
About this quiz and data
Population estimates from the pinned CIA World Factbook archive (CC0), checked 14 September 2026. Figures use mixed 2024/2025 reference years, labelled per row. This ranks a fixed historical snapshot, not a single-year survey or live counts.
Country names follow our catalogue. Congo means the Republic of the Congo; the Democratic Republic of the Congo belongs under D. Common alternative names are accepted. Figures are visible as clues.
View the pinned data source