| Countries of the World Quiz | 0 | - | 5.00 | 47,528,291 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,042 |
| NATO Countries | 0 | - | 4.98 | 281,054 |
| EU Countries Quiz | 0 | - | 4.99 | 274,967 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,925 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,893 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,954 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 148,762 |
| Countries with NO Military | 0 | - | 4.97 | 62,504 |
| Countries by Number of Books Published | 0 | - | 4.95 | 72,720 |
| Landlocked Countries | 0 | - | 4.99 | 421,291 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,443 |
| Countries with the Most Tanks | 0 | - | 4.91 | 107,549 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 50,649 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,856 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,084 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,385 |
| Buddhist Countries | 0 | - | 4.96 | 144,487 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,714 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 123,742 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,563 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,119 |
| Himalayan Countries | 0 | - | 4.95 | 138,412 |
| Andean Countries | 0 | - | 4.93 | 84,430 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,644 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,592 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,276 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,674 |
| Danube Countries | 0 | - | 4.97 | 71,929 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,912 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,343 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,155 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,612 |
| European Landlocked Countries | 0 | - | 4.99 | 147,058 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,506 |
| Countries with the Most Species | 0 | - | 4.99 | 103,167 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,658 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,546 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,689 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,493 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,172 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,584 |
| Countries in the Alps | 0 | - | 4.87 | 118,090 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,605 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,902 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,602 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,528 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,415 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,891 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,577 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,433 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,134 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,780 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,611 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,470 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,153 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,407 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,446 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,726 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,241 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 61,308 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,942 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,577 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,901 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,165 |
| Largest Countries By Category | 0 | - | 4.97 | 158,083 |
| Countries by Countries | 0 | - | 4.96 | 63,116 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,601 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,011 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,317 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,786 |
| Island Countries | 0 | - | 4.99 | 710,778 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,966 |
| Northernmost Countries | 0 | - | 4.99 | 361,649 |
| Countries of South America | 0 | - | 5.00 | 926,286 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,537 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,981 |
| "Land" Countries | 0 | - | 4.98 | 337,118 |
| Countries that Start with A | 0 | - | 4.98 | 2,164,756 |
| Countries that Start with B | 0 | - | 4.95 | 2,296,372 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,667 |
| Countries that Start with D | 0 | - | 4.96 | 710,767 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,469 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,713 |
| Countries that Start with H | 0 | - | 4.96 | 605,567 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,327 |
| Countries that Start with J | 0 | - | 4.98 | 603,209 |
| Countries that Start with K | 0 | - | 4.97 | 816,683 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,738 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,753 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,170 |
| Countries that Start with S | 0 | - | 4.98 | 1,756,300 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,655 |
| Countries that Start with U | 0 | - | 4.97 | 905,157 |
| Countries that Start with V | 0 | - | 4.98 | 609,790 |
| Countries that Start with F | 0 | - | 4.83 | 618,233 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,817 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,639 |
| Orthodox Countries | 0 | - | 4.92 | 132,118 |
| Richest Island Countries | 0 | - | 4.85 | 100,675 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,921 |
| Monarchies of Europe | 0 | - | 4.90 | 98,242 |
| Monarchies of Asia | 0 | - | 4.97 | 71,150 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,993 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,956 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,549 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,546 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,862 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,479 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,541 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,101 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,431 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,644 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,901 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 195,375 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,483 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,719 |
| Countries with Megacities | 0 | - | 4.99 | 264,136 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,564 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,383 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,825 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,438 |
| Countries by Official Language | 0 | - | 4.95 | 195,108 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,183 |
| Countries in their Native Language | 0 | - | 4.99 | 198,889 |
| Independence from Whom | 0 | - | 4.99 | 211,926 |
| Subdivisions by Country | 0 | - | 4.86 | 50,397 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,611 |
| Megadiverse Countries | 0 | - | 4.96 | 134,952 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,957 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,307 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,884 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,085 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,022 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,556 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,365 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,990 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,607 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,058 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,537 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,838 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,157 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,925 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,283 |
| Richest Countries A-Z | 0 | - | 4.91 | 103,303 |
| Large Countries with Small Economies | 0 | - | 4.95 | 80,995 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,281 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,959 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,195 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,916 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,026 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,817 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,945 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,246 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,401 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,520 |
| Widest Countries East to West | 0 | - | 4.92 | 129,580 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,434 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,302 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,096 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,720 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,516 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,788 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,343 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,786 |
| Countries with Double Letters | 0 | - | 4.96 | 96,047 |
| Countries that End in N | 0 | - | 4.95 | 170,933 |
| Countries with Five Letters | 0 | - | 4.96 | 282,116 |
| Countries with Six Letters | 0 | - | 4.94 | 213,358 |
| Countries with W | 0 | - | 4.97 | 160,179 |
| Countries with Z | 0 | - | 4.98 | 291,239 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,546 |
| Countries That End in U | 0 | - | 4.95 | 120,765 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,312 |
| Countries that End in O | 0 | - | 4.92 | 159,453 |
| Countries that End in R | 0 | - | 4.87 | 118,920 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,680 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,920 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,594 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,400 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,315 |
| Countries That End in Y | 0 | - | 4.91 | 185,829 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,794 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,759 |
| Countries that End in I | 0 | - | 4.94 | 135,044 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,965 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,767 |
| Countries That End in NIA | 0 | - | 4.92 | 109,718 |
| Countries That End in BIA | 0 | - | 4.93 | 149,122 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,017 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,350 |
| Countries That End in RIA | 0 | - | 4.93 | 126,761 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,939 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,389 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,580 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,975 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,549 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,530 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,944 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,425 |
