| NATO Countries | 0 | - | 4.98 | 284,111 |
| EU Countries Quiz | 0 | - | 4.99 | 279,013 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,987,894 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,535 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,009 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,146 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,864 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 150,069 |
| Countries with NO Military | 0 | - | 4.97 | 63,638 |
| Countries by Number of Books Published | 0 | - | 4.95 | 73,210 |
| Landlocked Countries | 0 | - | 4.99 | 427,475 |
| All OPEC Countries Ever | 0 | - | 4.70 | 100,452 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,979 |
| Countries with the Most Tanks | 0 | - | 4.91 | 108,490 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 51,294 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 75,256 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,464 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,379 |
| Buddhist Countries | 0 | - | 4.96 | 145,286 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,391 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 125,034 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,032 |
| Countries of Asia with Two or More Words | 0 | - | 4.96 | 128,051 |
| Asian Countries Ending in "IA" | 0 | - | 4.96 | 108,512 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 155,002 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,016 |
| Himalayan Countries | 0 | - | 4.93 | 140,917 |
| Andean Countries | 0 | - | 4.94 | 85,851 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,962 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,562 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,501 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,721 |
| Danube Countries | 0 | - | 4.97 | 72,577 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,841 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,998 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,488 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,960 |
| European Landlocked Countries | 0 | - | 4.99 | 147,799 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,569 |
| Countries with the Most Species | 0 | - | 4.99 | 103,657 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,675 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,822 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,962 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,940 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,693 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,151 |
| Countries in the Alps | 0 | - | 4.87 | 119,012 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,059 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,201 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,076 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,198 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,158 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,409 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,625 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,014 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,522 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,331 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,966 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,842 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,689 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,943 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,045 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,193 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,753 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,628 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,865 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,444 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,566 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,631 |
| Largest Countries By Category | 0 | - | 4.97 | 159,126 |
| Countries by Countries | 0 | - | 4.97 | 63,826 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,257 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,826 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,108 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,504 |
| Island Countries | 0 | - | 4.99 | 713,087 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,447 |
| Northernmost Countries | 0 | - | 4.99 | 364,711 |
| Countries of South America | 0 | - | 5.00 | 934,632 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,895 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,840 |
| "Land" Countries | 0 | - | 4.98 | 339,090 |
| Countries that Start with A | 0 | - | 4.98 | 2,178,962 |
| Countries that Start with B | 0 | - | 4.95 | 2,309,573 |
| Countries that Start with C | 0 | - | 4.96 | 1,833,846 |
| Countries that Start with D | 0 | - | 4.96 | 718,112 |
| Countries that Start with E | 0 | - | 4.95 | 1,387,045 |
| Countries that Start with G | 0 | - | 4.97 | 1,513,622 |
| Countries that Start with H | 0 | - | 4.96 | 610,767 |
| Countries that Start with I | 0 | - | 4.92 | 1,296,181 |
| Countries that Start with J | 0 | - | 4.98 | 608,138 |
| Countries that Start with K | 0 | - | 4.97 | 821,979 |
| Countries that Start with L | 0 | - | 4.98 | 1,098,364 |
| Countries that Start with N | 0 | - | 4.93 | 1,125,466 |
| Countries that Start with P | 0 | - | 4.94 | 1,223,582 |
| Countries that Start with S | 0 | - | 4.98 | 1,765,232 |
| Countries that Start with T | 0 | - | 4.90 | 1,016,117 |
| Countries that Start with U | 0 | - | 4.97 | 909,399 |
| Countries that Start with V | 0 | - | 4.98 | 612,678 |
| Countries that Start with F | 0 | - | 4.83 | 622,199 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,905 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,671 |
| Orthodox Countries | 0 | - | 4.92 | 132,991 |
| Richest Island Countries | 0 | - | 4.85 | 101,389 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,807 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,731 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,913 |
| Monarchies of Europe | 0 | - | 4.90 | 99,055 |
| Monarchies of Asia | 0 | - | 4.97 | 71,623 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,387 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,368 |
| Countries with the Most Muslims | 0 | - | 4.95 | 161,405 |
| Countries with the Most Exports | 0 | - | 4.96 | 156,414 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,713 |
| Countries by Oil Consumption | 0 | - | 4.96 | 125,135 |
| Largest Economies in 2050 | 0 | - | 4.88 | 112,089 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,692 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 105,171 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 85,252 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 239,034 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,885 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,742 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 196,374 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 119,277 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,569 |
| Countries with Megacities | 0 | - | 4.99 | 268,007 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,221 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,372 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,551 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,476 |
| Countries by Official Language | 0 | - | 4.95 | 196,278 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,015 |
| Countries in their Native Language | 0 | - | 4.99 | 199,999 |
| Independence from Whom | 0 | - | 4.99 | 213,470 |
| Subdivisions by Country | 0 | - | 4.87 | 50,676 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,716 |
| Megadiverse Countries | 0 | - | 4.96 | 149,524 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,175 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,590 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,828 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,265 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,513 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,938 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,333 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,641 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,188 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,291 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,837 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,507 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,520 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,232 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,652 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,968 |
| Richest Countries A-Z | 0 | - | 4.91 | 104,282 |
| Large Countries with Small Economies | 0 | - | 4.95 | 81,410 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,836 |
| Communist Countries in History | 0 | - | 4.63 | 498,829 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,570 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,260 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,731 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,004 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,585 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,698 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,878 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,778 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,983 |
| Widest Countries East to West | 0 | - | 4.92 | 130,887 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,636 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,435 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,575 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,175 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,169 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,631 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,543 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,929 |
| Countries with Double Letters | 0 | - | 4.96 | 97,715 |
| Countries that End in N | 0 | - | 4.95 | 172,707 |
| Countries with Five Letters | 0 | - | 4.96 | 284,743 |
| Countries with Six Letters | 0 | - | 4.94 | 215,041 |
| Countries with W | 0 | - | 4.96 | 161,371 |
| Countries with Z | 0 | - | 4.98 | 293,104 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,740 |
| Countries That End in U | 0 | - | 4.95 | 121,428 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,491 |
| Countries that End in O | 0 | - | 4.92 | 160,402 |
| Countries that End in R | 0 | - | 4.87 | 119,301 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,078 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,206 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,117 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,259 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,929 |
| Countries That End in Y | 0 | - | 4.91 | 186,191 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,441 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,456 |
| Countries that End in I | 0 | - | 4.94 | 135,445 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,389 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,165 |
| Countries That End in NIA | 0 | - | 4.92 | 110,173 |
| Countries That End in BIA | 0 | - | 4.93 | 149,770 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,972 |
