| Countries of the World Quiz | 0 | - | 5.00 | 47,930,627 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,088 |
| NATO Countries | 0 | - | 4.98 | 283,751 |
| EU Countries Quiz | 0 | - | 4.99 | 278,468 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,671 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,391 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,618 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 149,901 |
| Countries with NO Military | 0 | - | 4.97 | 63,521 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,146 |
| Landlocked Countries | 0 | - | 4.99 | 426,728 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,822 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,391 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,228 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,203 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,077 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,249 |
| Buddhist Countries | 0 | - | 4.96 | 145,193 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,152 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,835 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,808,796 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,655 |
| Himalayan Countries | 0 | - | 4.93 | 140,589 |
| Andean Countries | 0 | - | 4.94 | 85,674 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,805 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,302 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,361 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,589 |
| Danube Countries | 0 | - | 4.97 | 72,494 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,715 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,915 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,318 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,768 |
| European Landlocked Countries | 0 | - | 4.99 | 147,685 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,431 |
| Countries with the Most Species | 0 | - | 4.99 | 103,612 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,547 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,795 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,925 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,890 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,631 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,087 |
| Countries in the Alps | 0 | - | 4.87 | 118,886 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,843 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,029 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,024 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,114 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,058 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,339 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,494 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,940 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,480 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,263 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,927 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,802 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,625 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,866 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,968 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,041 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,674 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,847 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,768 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,018 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,341 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,572 |
| Largest Countries By Category | 0 | - | 4.97 | 158,977 |
| Countries by Countries | 0 | - | 4.97 | 63,731 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,175 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,115 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,898 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,068 |
| Island Countries | 0 | - | 4.99 | 712,803 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,531 |
| Northernmost Countries | 0 | - | 4.99 | 364,347 |
| Countries of South America | 0 | - | 5.00 | 933,579 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,569 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,344 |
| "Land" Countries | 0 | - | 4.98 | 338,674 |
| Countries that Start with A | 0 | - | 4.98 | 2,177,198 |
| Countries that Start with B | 0 | - | 4.95 | 2,307,871 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,545 |
| Countries that Start with D | 0 | - | 4.96 | 717,188 |
| Countries that Start with E | 0 | - | 4.95 | 1,385,966 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,450 |
| Countries that Start with H | 0 | - | 4.96 | 610,088 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,258 |
| Countries that Start with J | 0 | - | 4.98 | 607,479 |
| Countries that Start with K | 0 | - | 4.97 | 821,311 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,531 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,589 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,722 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,110 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,453 |
| Countries that Start with U | 0 | - | 4.97 | 908,894 |
| Countries that Start with V | 0 | - | 4.98 | 612,314 |
| Countries that Start with F | 0 | - | 4.83 | 621,700 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,009 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,528 |
| Orthodox Countries | 0 | - | 4.92 | 132,880 |
| Richest Island Countries | 0 | - | 4.85 | 101,294 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,611 |
| Monarchies of Europe | 0 | - | 4.90 | 98,964 |
| Monarchies of Asia | 0 | - | 4.97 | 71,555 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,228 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,321 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,284 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,280 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,579 |
| Countries by Oil Consumption | 0 | - | 4.96 | 123,490 |
| Largest Economies in 2050 | 0 | - | 4.88 | 111,997 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,245 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,074 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 85,168 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,622 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,257 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,171 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,365 |
| Countries with Megacities | 0 | - | 4.99 | 267,534 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,021 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,252 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,348 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,354 |
| Countries by Official Language | 0 | - | 4.95 | 196,135 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,809 |
| Countries in their Native Language | 0 | - | 4.99 | 199,859 |
| Independence from Whom | 0 | - | 4.99 | 213,267 |
| Subdivisions by Country | 0 | - | 4.87 | 50,644 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,577 |
| Megadiverse Countries | 0 | - | 4.96 | 146,679 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,053 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,560 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,760 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,242 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,375 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,898 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,203 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,600 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,130 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,279 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,670 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,446 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,475 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,189 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,899 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,148 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,348 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,768 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,404 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,168 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,637 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,763 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,498 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,615 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,803 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,737 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,869 |
| Widest Countries East to West | 0 | - | 4.92 | 130,788 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,620 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,326 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,542 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,111 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,062 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,554 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,521 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,911 |
| Countries with Double Letters | 0 | - | 4.96 | 97,348 |
| Countries that End in N | 0 | - | 4.95 | 172,417 |
| Countries with Five Letters | 0 | - | 4.96 | 284,338 |
| Countries with Six Letters | 0 | - | 4.94 | 214,732 |
| Countries with W | 0 | - | 4.96 | 161,133 |
| Countries with Z | 0 | - | 4.98 | 292,727 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,485 |
| Countries That End in U | 0 | - | 4.95 | 121,297 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,265 |
| Countries that End in O | 0 | - | 4.92 | 160,297 |
| Countries that End in R | 0 | - | 4.87 | 119,236 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,004 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,006 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 178,485 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,983 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,203 |
| Countries That End in Y | 0 | - | 4.91 | 186,134 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,827 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,351 |
| Countries that End in I | 0 | - | 4.94 | 135,372 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,915 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,106 |
| Countries That End in NIA | 0 | - | 4.92 | 110,113 |
| Countries That End in BIA | 0 | - | 4.93 | 149,672 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,851 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,838 |
| Countries That End in RIA | 0 | - | 4.93 | 127,105 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,473 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,796 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,291 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,753 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,303 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,862 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,389 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,569 |
