| NATO Countries | 0 | - | 4.98 | 275,653 |
| EU Countries Quiz | 0 | - | 4.99 | 269,872 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,908,044 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,458 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,866 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,214 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,014 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,738 |
| Countries with NO Military | 0 | - | 4.97 | 61,154 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,897 |
| Landlocked Countries | 0 | - | 4.99 | 413,468 |
| OPEC Countries | 0 | - | 4.74 | 84,815 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,421 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,242 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,727 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,116 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,907 |
| Buddhist Countries | 0 | - | 4.96 | 142,932 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,827 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,060 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,433 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,524 |
| Himalayan Countries | 0 | - | 4.95 | 135,305 |
| Andean Countries | 0 | - | 4.94 | 82,802 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,196 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,161 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,872 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,575 |
| Danube Countries | 0 | - | 4.97 | 71,066 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,736 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,522 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,437 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,363 |
| European Landlocked Countries | 0 | - | 4.99 | 145,737 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,181 |
| Countries with the Most Species | 0 | - | 4.99 | 95,235 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,317 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,196 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,364 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,949 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,564 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,940 |
| Countries in the Alps | 0 | - | 4.86 | 116,796 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,544 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,234 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,996 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,406 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,137 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,985 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,556 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,741 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,211 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,038 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,192 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,036 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,443 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,725 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,742 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,031 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,625 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,248 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,754 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,209 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,632 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,597 |
| Largest Countries By Category | 0 | - | 4.97 | 156,732 |
| Countries by Countries | 0 | - | 4.96 | 62,246 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,751 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,698 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,068 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,775 |
| Island Countries | 0 | - | 4.99 | 707,563 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,294 |
| Northernmost Countries | 0 | - | 4.99 | 357,657 |
| Countries of South America | 0 | - | 5.00 | 914,458 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,168 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,875 |
| "Land" Countries | 0 | - | 4.98 | 333,609 |
| Countries that Start with A | 0 | - | 4.97 | 2,146,478 |
| Countries that Start with B | 0 | - | 4.95 | 2,279,601 |
| Countries that Start with C | 0 | - | 4.96 | 1,810,075 |
| Countries that Start with D | 0 | - | 4.96 | 701,369 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,348 |
| Countries that Start with G | 0 | - | 4.97 | 1,492,592 |
| Countries that Start with H | 0 | - | 4.96 | 597,823 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,136 |
| Countries that Start with J | 0 | - | 4.98 | 595,895 |
| Countries that Start with K | 0 | - | 4.97 | 809,291 |
| Countries that Start with L | 0 | - | 4.98 | 1,082,723 |
| Countries that Start with N | 0 | - | 4.93 | 1,109,590 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,404 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,315 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,106 |
| Countries that Start with U | 0 | - | 4.97 | 899,843 |
| Countries that Start with V | 0 | - | 4.98 | 605,011 |
| Countries that Start with F | 0 | - | 4.83 | 612,089 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,163 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,011 |
| Orthodox Countries | 0 | - | 4.91 | 130,362 |
| Richest Island Countries | 0 | - | 4.84 | 99,501 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,924 |
| Monarchies of Europe | 0 | - | 4.90 | 97,299 |
| Monarchies of Asia | 0 | - | 4.97 | 70,591 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,416 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,430 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,260 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,148 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,476 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,540 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,634 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,055 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,925 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,699 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,577 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,888 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,443 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,104 |
| Countries with Megacities | 0 | - | 4.99 | 246,749 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,036 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,913 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,455 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,808 |
| Countries by Official Language | 0 | - | 4.95 | 192,743 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,082 |
| Countries in their Native Language | 0 | - | 4.99 | 196,607 |
| Independence from Whom | 0 | - | 4.99 | 209,649 |
| Subdivisions by Country | 0 | - | 4.86 | 50,061 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,722 |
| Megadiverse Countries | 0 | - | 4.97 | 133,888 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,773 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,914 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,422 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,854 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,636 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,988 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,902 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,133 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,209 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,542 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,406 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,483 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,491 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,073 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,823 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,311 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,313 |
| Communist Countries in History | 0 | - | 4.63 | 492,462 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,320 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,975 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,933 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,703 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,839 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,049 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,262 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,935 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,327 |
| Widest Countries East to West | 0 | - | 4.92 | 128,595 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,190 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,562 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,679 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,618 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,028 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,049 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,575 |
| Countries with Double Letters | 0 | - | 4.97 | 93,361 |
| Countries that End in N | 0 | - | 4.94 | 156,654 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,656 |
| Countries with Six Letters | 0 | - | 4.93 | 210,320 |
| Countries with W | 0 | - | 4.97 | 158,206 |
| Countries with Z | 0 | - | 4.98 | 287,836 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,528 |
| Countries That End in U | 0 | - | 4.95 | 119,507 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,515 |
| Countries that End in O | 0 | - | 4.92 | 158,541 |
| Countries that End in R | 0 | - | 4.87 | 118,263 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,854 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,986 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,305 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,478 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,995 |
| Countries That End in Y | 0 | - | 4.90 | 185,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,347 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,663 |
| Countries that End in I | 0 | - | 4.94 | 134,402 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,167 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,183 |
| Countries That End in NIA | 0 | - | 4.92 | 108,994 |
| Countries That End in BIA | 0 | - | 4.92 | 147,699 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,047 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,473 |
| Countries That End in RIA | 0 | - | 4.93 | 126,067 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,988 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,161 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,505 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,882 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,341 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,922 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,104 |
