| NATO Countries | 0 | - | 4.98 | 283,499 |
| EU Countries Quiz | 0 | - | 4.99 | 277,997 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,889,172 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,783 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,447 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,049 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,427 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,795 |
| Countries with NO Military | 0 | - | 4.97 | 63,425 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,106 |
| Landlocked Countries | 0 | - | 4.99 | 426,018 |
| All OPEC Countries Ever | 0 | - | 4.70 | 100,178 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,706 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,310 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,166 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,163 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,161 |
| Buddhist Countries | 0 | - | 4.96 | 145,116 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 336,963 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,712 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,805,218 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,432 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,528 |
| 10 Biggest Asian Countries by Area | 0 | - | 4.97 | 154,544 |
| 10 Biggest American Countries by Area | 0 | - | 4.95 | 112,973 |
| Top 10 Most Populous American Countries | 0 | - | 4.96 | 144,814 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,071 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 117,759 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 162,307 |
| 10 Southernmost Countries in Asia | 0 | - | 4.97 | 99,927 |
| 10 Easternmost Countries in Asia | 0 | - | 4.99 | 109,169 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 35,354 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 124,937 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,653 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,350 |
| Himalayan Countries | 0 | - | 4.93 | 140,311 |
| Andean Countries | 0 | - | 4.94 | 85,502 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,645 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,054 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,219 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,460 |
| Danube Countries | 0 | - | 4.97 | 72,418 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,614 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,856 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,158 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,641 |
| European Landlocked Countries | 0 | - | 4.99 | 147,621 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,327 |
| Countries with the Most Species | 0 | - | 4.99 | 103,574 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,429 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,781 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,892 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,849 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,588 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,029 |
| Countries in the Alps | 0 | - | 4.87 | 118,798 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,672 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,897 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,971 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,037 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,976 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,276 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,424 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,877 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,437 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,192 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,889 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,752 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,569 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,811 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,904 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,885 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,627 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 73,776 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,691 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,774 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,189 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,518 |
| Largest Countries By Category | 0 | - | 4.97 | 158,885 |
| Countries by Countries | 0 | - | 4.96 | 63,658 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,116 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,536 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,727 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,768 |
| Island Countries | 0 | - | 4.99 | 712,619 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,893 |
| Northernmost Countries | 0 | - | 4.99 | 364,077 |
| Countries of South America | 0 | - | 5.00 | 932,872 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,596 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,716 |
| "Land" Countries | 0 | - | 4.98 | 338,424 |
| Countries that Start with A | 0 | - | 4.98 | 2,175,962 |
| Countries that Start with B | 0 | - | 4.95 | 2,306,682 |
| Countries that Start with C | 0 | - | 4.96 | 1,831,627 |
| Countries that Start with D | 0 | - | 4.96 | 716,537 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,227 |
| Countries that Start with G | 0 | - | 4.97 | 1,511,679 |
| Countries that Start with H | 0 | - | 4.96 | 609,666 |
| Countries that Start with I | 0 | - | 4.92 | 1,294,687 |
| Countries that Start with J | 0 | - | 4.98 | 607,058 |
| Countries that Start with K | 0 | - | 4.97 | 820,851 |
| Countries that Start with L | 0 | - | 4.98 | 1,096,935 |
| Countries that Start with N | 0 | - | 4.93 | 1,123,985 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,129 |
| Countries that Start with S | 0 | - | 4.98 | 1,763,288 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,005 |
| Countries that Start with U | 0 | - | 4.97 | 908,546 |
| Countries that Start with V | 0 | - | 4.98 | 612,057 |
| Countries that Start with F | 0 | - | 4.83 | 621,354 |
| Countries that Start with M | 0 | - | 4.97 | 1,388,387 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,447 |
| Orthodox Countries | 0 | - | 4.92 | 132,815 |
| Richest Island Countries | 0 | - | 4.85 | 101,226 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,077 |
| 10 Easternmost Countries in Africa | 0 | - | 4.98 | 25,116 |
| Monarchies of Europe | 0 | - | 4.90 | 98,885 |
| Monarchies of Asia | 0 | - | 4.97 | 71,513 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,122 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,292 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,206 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,177 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,484 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,786 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,940 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,919 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,995 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 85,094 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,561 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,156 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 73,313 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 96,818 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,527 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 106,870 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,611 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,100 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,201 |
| Countries with Megacities | 0 | - | 4.99 | 267,189 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,881 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,154 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,197 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,265 |
| Countries by Official Language | 0 | - | 4.95 | 196,023 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,666 |
| Countries in their Native Language | 0 | - | 4.99 | 199,756 |
| Independence from Whom | 0 | - | 4.99 | 213,105 |
| Subdivisions by Country | 0 | - | 4.87 | 50,621 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,462 |
| Megadiverse Countries | 0 | - | 4.96 | 135,288 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,965 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,546 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,697 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,232 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,278 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,861 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,130 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,573 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,071 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,261 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,563 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,385 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,449 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,154 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,849 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,057 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,311 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,723 |
| Communist Countries in History | 0 | - | 4.63 | 498,260 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,289 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,103 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,575 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,619 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,452 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,553 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,752 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,703 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,750 |
| Widest Countries East to West | 0 | - | 4.92 | 130,493 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,602 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,275 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,524 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,071 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,992 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,498 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,507 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,896 |
| Countries with Double Letters | 0 | - | 4.96 | 97,111 |
| Countries that End in N | 0 | - | 4.95 | 171,984 |
| Countries with Five Letters | 0 | - | 4.96 | 283,839 |
| Countries with Six Letters | 0 | - | 4.94 | 214,515 |
| Countries with W | 0 | - | 4.96 | 160,974 |
| Countries with Z | 0 | - | 4.98 | 292,493 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,308 |
| Countries That End in U | 0 | - | 4.95 | 121,202 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,130 |
| Countries that End in O | 0 | - | 4.92 | 160,227 |
| Countries that End in R | 0 | - | 4.87 | 119,192 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,950 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,875 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,171 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,845 |
