| Countries of the World Quiz | 0 | - | 5.00 | 46,955,070 |
| Landlocked Countries | 0 | - | 4.99 | 414,014 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,549 |
| Countries by Emojis | 0 | - | 4.99 | 236,530 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,162 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,720,517 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,762 |
| Himalayan Countries | 0 | - | 4.95 | 135,499 |
| Andean Countries | 0 | - | 4.94 | 82,900 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,282 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,295 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,972 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,658 |
| Danube Countries | 0 | - | 4.97 | 71,119 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,819 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,581 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,571 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,477 |
| European Landlocked Countries | 0 | - | 4.99 | 145,804 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,271 |
| Countries with the Most Species | 0 | - | 4.99 | 95,264 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,413 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,212 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,384 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,978 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,605 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,985 |
| Countries in the Alps | 0 | - | 4.86 | 116,900 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,612 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,338 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,044 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,462 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,224 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,044 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,622 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,792 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,458 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,104 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,206 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,066 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,482 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,794 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,784 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,158 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,688 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,280 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,834 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,526 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,815 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,627 |
| Largest Countries By Category | 0 | - | 4.97 | 156,837 |
| Countries by Countries | 0 | - | 4.96 | 62,300 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,467 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,977 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,345 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,812 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,582 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,275 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,084 |
| Island Countries | 0 | - | 4.99 | 707,776 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,046 |
| Northernmost Countries | 0 | - | 4.99 | 357,966 |
| Countries of South America | 0 | - | 5.00 | 915,525 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,518 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,941 |
| "Land" Countries | 0 | - | 4.98 | 333,756 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,433 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,394 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,377 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,890 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,471 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,756 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,666 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,626 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,521 |
| Countries with Megacities | 0 | - | 4.99 | 247,368 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,339 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,132 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,766 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,048 |
| Countries by Official Language | 0 | - | 4.95 | 192,862 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,250 |
| Countries in their Native Language | 0 | - | 4.99 | 196,718 |
| Independence from Whom | 0 | - | 4.99 | 209,804 |
| Subdivisions by Country | 0 | - | 4.86 | 50,087 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,838 |
| Megadiverse Countries | 0 | - | 4.97 | 133,942 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,890 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,938 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,448 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,871 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,720 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,033 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,116 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,189 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,231 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,755 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,673 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,444 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,525 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,523 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,709 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,041 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,690 |
| World Map Quiz | 0 | - | 4.81 | 63,575 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 129,726 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,922 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,379 |
| Countries by Founding Story | 0 | - | 4.95 | 76,585 |
| Countries by Road Signs | 0 | - | 4.98 | 53,147 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,447 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,137 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,994 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,887 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,912 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,103 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,314 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,971 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,365 |
| Widest Countries East to West | 0 | - | 4.92 | 128,640 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,221 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,277 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,589 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,720 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,674 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,099 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,060 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,596 |
| Countries with Double Letters | 0 | - | 4.96 | 93,461 |
| Countries that End in N | 0 | - | 4.94 | 156,961 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,767 |
| Countries with Six Letters | 0 | - | 4.93 | 210,431 |
| Countries with W | 0 | - | 4.97 | 158,280 |
| Countries with Z | 0 | - | 4.98 | 287,969 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,608 |
| Countries That End in U | 0 | - | 4.95 | 119,541 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,661 |
| Countries that End in O | 0 | - | 4.92 | 158,583 |
| Countries that End in R | 0 | - | 4.87 | 118,298 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,875 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,165 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,391 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,535 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,076 |
| Countries That End in Y | 0 | - | 4.90 | 185,227 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,448 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,741 |
| Countries that End in I | 0 | - | 4.94 | 134,455 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,274 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,229 |
| Countries That End in NIA | 0 | - | 4.92 | 109,041 |
| Countries That End in BIA | 0 | - | 4.92 | 147,747 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,124 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,525 |
| Countries That End in RIA | 0 | - | 4.93 | 126,114 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,046 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,272 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,551 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,929 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,413 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,952 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,161 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,690 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,549 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,832 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,199 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,863 |
| Countries that End in L | 0 | - | 4.94 | 155,780 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,471 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,997 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,541 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,337 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,460 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,340 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,252 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 132,394 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,328 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,579 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,647 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,680 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,182 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,434 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,350 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,061 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,114 |
| Name a Valid African Country | 0 | - | 4.98 | 153,025 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,340 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,831 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,840 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 335,136 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,917 |
| One Border Countries | 0 | - | 4.98 | 464,723 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,984 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,040 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,676 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,944 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,140 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,976 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,537 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,723 |
