| Countries of the World Quiz | 0 | - | 5.00 | 47,740,794 |
| Landlocked Countries | 0 | - | 4.99 | 423,936 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,846 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,396 |
| Himalayan Countries | 0 | - | 4.94 | 139,562 |
| Andean Countries | 0 | - | 4.94 | 85,080 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,262 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,486 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,829 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,134 |
| Danube Countries | 0 | - | 4.97 | 72,217 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,320 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,637 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,732 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,235 |
| European Landlocked Countries | 0 | - | 4.99 | 147,393 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,999 |
| Countries with the Most Species | 0 | - | 4.99 | 103,427 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,121 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,686 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,799 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,707 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,443 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,856 |
| Countries in the Alps | 0 | - | 4.87 | 118,506 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,110 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,475 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,817 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,819 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,756 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,099 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,576 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,937 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,685 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,308 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,026 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,768 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,633 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,395 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,642 |
| Countries by Satellite Image #1 | 0 | - | 4.89 | 146,543 |
| Countries by Satellite Image #5 | 0 | - | 4.90 | 83,023 |
| Countries by Partial Satellite Image #3 | 0 | - | 4.83 | 49,162 |
| Countries by Partial Flag Images #1 | 0 | - | 4.96 | 145,894 |
| Countries by Partial Flag Images #3 | 0 | - | 4.98 | 116,979 |
| Flags with the Most Stars | 0 | - | 4.91 | 137,487 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,730 |
| Country Flags with the Southern Cross | 0 | - | 4.81 | 62,963 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,394 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,478 |
| Flags that are Red & White Only | 0 | - | 4.97 | 165,266 |
| Country Flags that are Red, White, and Blue Only | 0 | - | 4.92 | 146,972 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,301 |
| Flags of the Countries with Four Letters | 0 | - | 4.94 | 77,233 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,383 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,959 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,691 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,388 |
| Largest Countries By Category | 0 | - | 4.97 | 158,557 |
| Countries by Countries | 0 | - | 4.96 | 63,448 |
| Four Countries with Similar Flags #2 | 0 | - | 4.92 | 48,159 |
| Four Countries with Similar Flags #1 | 0 | - | 4.97 | 69,084 |
| Pixelated World Map | 0 | - | 5.00 | 143,881 |
| Country Flags with the Most Red | 0 | - | 4.98 | 121,095 |
| Country Flags with the Most Blue | 0 | - | 4.89 | 93,068 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,025 |
| Country Flags with the Most Green | 0 | - | 4.96 | 100,137 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,351 |
| Country Flags with the Most Colours A-Z | 0 | - | 4.95 | 50,387 |
| Countries by Partial Flag Images #2 | 0 | - | 4.97 | 99,897 |
| Countries by Partial Flag Images #4 | 0 | - | 4.91 | 81,252 |
| Countries by Partial Flag Images #5 | 0 | - | 4.98 | 66,459 |
| Countries by Partial Flag Images #6 | 0 | - | 4.89 | 45,536 |
| Countries by Partial Flag Images #7 | 0 | - | 4.88 | 32,477 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,921 |
| Countries by Coat of Arms #1 | 0 | - | 4.92 | 72,960 |
| Countries by Coat of Arms #2 | 0 | - | 4.81 | 41,593 |
| World Coats of Arms | 0 | - | 4.99 | 64,923 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,914 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,935 |
| Every Country Shape | 0 | - | 5.00 | 469,428 |
| Countries With Blue and White Flags | 0 | - | 4.90 | 98,713 |
| Country Flags that are White, Red and Green Only | 0 | - | 4.86 | 36,154 |
| Country Flags With Blue Removed | 0 | - | 4.92 | 44,856 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,334 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,140 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,622 |
| Island Countries | 0 | - | 4.99 | 711,817 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,579 |
| Northernmost Countries | 0 | - | 4.99 | 363,132 |
| Countries of South America | 0 | - | 5.00 | 930,094 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,460 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,737 |
| "Land" Countries | 0 | - | 4.98 | 337,909 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,802 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,226 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,078 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,895 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,318 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,822 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,413 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 164,887 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 39,322 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 33,450 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,923 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,943 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 122,596 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,733 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,989 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,501 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,211 |
| Country Flags with Five Stars - Picture Quiz | 0 | - | 4.94 | 31,155 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,465 |
| Countries with Megacities | 0 | - | 4.99 | 265,916 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,260 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,760 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,518 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,865 |
| Countries by Official Language | 0 | - | 4.95 | 195,666 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,150 |
| Countries in their Native Language | 0 | - | 4.99 | 199,436 |
| Independence from Whom | 0 | - | 4.99 | 212,602 |
| Subdivisions by Country | 0 | - | 4.87 | 50,541 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,106 |
| Megadiverse Countries | 0 | - | 4.96 | 135,160 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,458 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,351 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,166 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,382 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,707 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,778 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,473 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,750 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,208 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,109 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,274 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,335 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,064 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,479 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,605 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,869 |
| World Map Quiz | 0 | - | 4.81 | 65,388 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,537 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,746 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,707 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,360 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,005 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,214 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,334 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,545 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,592 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,313 |
| Widest Countries East to West | 0 | - | 4.92 | 130,223 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,536 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,039 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,444 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,940 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,817 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,163 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,449 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,701 |
| Countries that End in N | 0 | - | 4.95 | 171,584 |
| Countries with Five Letters | 0 | - | 4.96 | 283,240 |
| Countries with Six Letters | 0 | - | 4.94 | 214,039 |
| Countries with W | 0 | - | 4.96 | 160,653 |
| Countries with Z | 0 | - | 4.98 | 291,995 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,022 |
| Countries That End in U | 0 | - | 4.95 | 121,036 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,813 |
| Countries that End in O | 0 | - | 4.92 | 159,679 |
| Countries that End in R | 0 | - | 4.87 | 119,081 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,837 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,487 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,944 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,659 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,588 |
| Countries That End in Y | 0 | - | 4.91 | 186,003 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,207 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,085 |
| Countries that End in I | 0 | - | 4.94 | 135,222 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,390 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,943 |
| Countries That End in NIA | 0 | - | 4.92 | 109,931 |
| Countries That End in BIA | 0 | - | 4.93 | 149,411 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,346 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,639 |
| Countries That End in RIA | 0 | - | 4.93 | 126,949 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,225 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,134 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,972 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,411 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,955 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,697 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,201 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,732 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,553 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,214 |
