| Countries by Number of Books Published | 0 | - | 4.95 | 71,912 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,925,546 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,575 |
| NATO Countries | 0 | - | 4.98 | 275,805 |
| EU Countries Quiz | 0 | - | 4.99 | 269,987 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,978 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,372 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,078 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,778 |
| Countries with NO Military | 0 | - | 4.97 | 61,185 |
| Landlocked Countries | 0 | - | 4.99 | 413,685 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,478 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,281 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,755 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,147 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,938 |
| Buddhist Countries | 0 | - | 4.96 | 142,962 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,896 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,108 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,717,458 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,642 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,725 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 152,781 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,160 |
| Top 10 Most Populous American Countries | 0 | - | 4.97 | 143,176 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,298 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 115,588 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 160,292 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 98,432 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 107,266 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 32,510 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.96 | 124,259 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,411 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,618 |
| Himalayan Countries | 0 | - | 4.95 | 135,384 |
| Andean Countries | 0 | - | 4.94 | 82,834 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,224 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,226 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,913 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,618 |
| Danube Countries | 0 | - | 4.97 | 71,089 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,769 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,541 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,496 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,410 |
| European Landlocked Countries | 0 | - | 4.99 | 145,760 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,221 |
| Countries with the Most Species | 0 | - | 4.99 | 95,244 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,356 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,371 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,960 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,832 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,576 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,267 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,015 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,427 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,174 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,009 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,585 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,760 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,316 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,067 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,198 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,046 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,455 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,753 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,758 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,078 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,652 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,255 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,774 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,329 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,691 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,606 |
| Largest Countries By Category | 0 | - | 4.97 | 156,769 |
| Countries by Countries | 0 | - | 4.96 | 62,263 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,775 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,073 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,138 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,880 |
| Island Countries | 0 | - | 4.99 | 707,653 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,530 |
| Northernmost Countries | 0 | - | 4.99 | 357,761 |
| Countries of South America | 0 | - | 5.00 | 914,883 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,601 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,848,602 |
| "Land" Countries | 0 | - | 4.98 | 333,672 |
| Countries that Start with A | 0 | - | 4.97 | 2,147,016 |
| Countries that Start with B | 0 | - | 4.95 | 2,280,013 |
| Countries that Start with C | 0 | - | 4.96 | 1,810,445 |
| Countries that Start with D | 0 | - | 4.96 | 701,635 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,614 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,903 |
| Countries that Start with H | 0 | - | 4.96 | 598,031 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,346 |
| Countries that Start with J | 0 | - | 4.98 | 596,082 |
| Countries that Start with K | 0 | - | 4.97 | 809,463 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,949 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,820 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,630 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,614 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,279 |
| Countries that Start with U | 0 | - | 4.97 | 899,963 |
| Countries that Start with V | 0 | - | 4.98 | 605,137 |
| Countries that Start with F | 0 | - | 4.83 | 612,236 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,449 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,057 |
| Orthodox Countries | 0 | - | 4.91 | 130,402 |
| Richest Island Countries | 0 | - | 4.84 | 99,525 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,492 |
| Monarchies of Europe | 0 | - | 4.90 | 97,337 |
| Monarchies of Asia | 0 | - | 4.97 | 70,611 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,470 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,434 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,290 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,179 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,508 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,559 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,655 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,154 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,959 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,725 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,611 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,922 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,258 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,051 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,414 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 105,066 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,038 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,483 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,275 |
| Countries with Megacities | 0 | - | 4.99 | 246,993 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,157 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,000 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,577 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,896 |
| Countries by Official Language | 0 | - | 4.95 | 192,785 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,148 |
| Countries in their Native Language | 0 | - | 4.99 | 196,646 |
| Independence from Whom | 0 | - | 4.99 | 209,712 |
| Subdivisions by Country | 0 | - | 4.86 | 50,069 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,769 |
| Megadiverse Countries | 0 | - | 4.97 | 133,907 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,921 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,431 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,863 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,670 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,008 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,035 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,151 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,217 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,748 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,581 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,426 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,500 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,506 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,096 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,872 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,335 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,336 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,365 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,997 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,959 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,787 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,860 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,067 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,281 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,951 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,338 |
| Widest Countries East to West | 0 | - | 4.92 | 128,610 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,218 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,223 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,694 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,638 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,049 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,051 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,585 |
| Countries with Double Letters | 0 | - | 4.97 | 93,399 |
| Countries that End in N | 0 | - | 4.94 | 156,889 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,698 |
| Countries with Six Letters | 0 | - | 4.93 | 210,375 |
| Countries with W | 0 | - | 4.97 | 158,237 |
| Countries with Z | 0 | - | 4.98 | 287,891 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,560 |
| Countries That End in U | 0 | - | 4.95 | 119,521 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,568 |
| Countries that End in O | 0 | - | 4.92 | 158,560 |
| Countries that End in R | 0 | - | 4.87 | 118,276 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,861 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,044 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,340 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,500 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,030 |
| Countries That End in Y | 0 | - | 4.90 | 185,209 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,387 |
