| Countries of the World Quiz | 0 | - | 5.00 | 47,095,361 |
| Landlocked Countries | 0 | - | 4.99 | 415,781 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,734,343 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,493 |
| Himalayan Countries | 0 | - | 4.95 | 136,133 |
| Andean Countries | 0 | - | 4.95 | 83,251 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,562 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,746 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,259 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,889 |
| Danube Countries | 0 | - | 4.97 | 71,308 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,072 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,759 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,965 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,913 |
| European Landlocked Countries | 0 | - | 4.99 | 146,015 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,612 |
| Countries with the Most Species | 0 | - | 4.99 | 95,375 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,741 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,289 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,454 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,096 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,746 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,117 |
| Countries in the Alps | 0 | - | 4.86 | 117,197 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,814 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,693 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,192 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,636 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,440 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,184 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,871 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,927 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,734 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,263 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,300 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,165 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,654 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,920 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,925 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,562 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,829 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,369 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,101 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,506 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,343 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,761 |
| Largest Countries By Category | 0 | - | 4.97 | 157,122 |
| Countries by Countries | 0 | - | 4.96 | 62,494 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,752 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,046 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,010 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,193 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,281 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,048 |
| Island Countries | 0 | - | 4.99 | 708,513 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,328 |
| Northernmost Countries | 0 | - | 4.99 | 358,940 |
| Countries of South America | 0 | - | 5.00 | 918,528 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,165 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,855 |
| "Land" Countries | 0 | - | 4.98 | 334,220 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,294 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,038 |
| Countries with Megacities | 0 | - | 4.99 | 248,479 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,920 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,424 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,311 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,366 |
| Countries by Official Language | 0 | - | 4.95 | 193,574 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,083 |
| Countries in their Native Language | 0 | - | 4.99 | 197,297 |
| Independence from Whom | 0 | - | 4.99 | 210,311 |
| Subdivisions by Country | 0 | - | 4.86 | 50,164 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,167 |
| Megadiverse Countries | 0 | - | 4.96 | 134,491 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,473 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,041 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,576 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,927 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,939 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,159 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,432 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,479 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,321 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,794 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,031 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,543 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,646 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,613 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,817 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,145 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,269 |
| World Map Quiz | 0 | - | 4.81 | 63,898 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,945 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,635 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,890 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,583 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,297 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,473 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,169 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,365 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,557 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,102 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,576 |
| Widest Countries East to West | 0 | - | 4.92 | 129,074 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,302 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,554 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,669 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,901 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,892 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,275 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,917 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,654 |
| Countries with Double Letters | 0 | - | 4.96 | 93,778 |
| Countries that End in N | 0 | - | 4.94 | 157,213 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,156 |
| Countries with Six Letters | 0 | - | 4.93 | 210,799 |
| Countries with W | 0 | - | 4.97 | 158,477 |
| Countries with Z | 0 | - | 4.98 | 288,357 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,833 |
| Countries That End in U | 0 | - | 4.95 | 119,651 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,969 |
| Countries that End in O | 0 | - | 4.92 | 158,688 |
| Countries that End in R | 0 | - | 4.87 | 118,400 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,954 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,512 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,610 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,700 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,259 |
| Countries That End in Y | 0 | - | 4.90 | 185,311 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,696 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,970 |
| Countries that End in I | 0 | - | 4.94 | 134,579 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,559 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,341 |
| Countries That End in NIA | 0 | - | 4.92 | 109,189 |
| Countries That End in BIA | 0 | - | 4.92 | 148,242 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,322 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,685 |
| Countries That End in RIA | 0 | - | 4.93 | 126,240 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,224 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,871 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,747 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,101 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,650 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,061 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,334 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,850 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,744 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,926 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,400 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,065 |
| Countries that End in L | 0 | - | 4.94 | 156,193 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,419 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,032 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,663 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,497 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,561 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,127 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,709 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,037 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,728 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,140 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,980 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,846 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,262 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,482 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,458 |
| Germany Country Quiz | 0 | - | 4.82 | 157,024 |
| Russia Country Quiz | 0 | - | 4.85 | 113,943 |
| Italy Country Quiz | 0 | - | 4.82 | 122,568 |
| Japan Country Quiz | 0 | - | 4.92 | 141,747 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,725 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,024 |
| Tanzania Country Quiz | 0 | - | 4.90 | 32,898 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,150 |
| Kazakhstan Country Quiz | 0 | - | 4.79 | 35,448 |
| Tuvalu Country Quiz | 0 | - | 4.86 | 21,351 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,185 |
| Nepal Country Quiz | 0 | - | 4.95 | 37,481 |
| Syria Country Quiz | 0 | - | 4.81 | 32,500 |
| Tonga Country Quiz | 0 | - | 4.82 | 20,419 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,606 |
| D.R. Congo Country Quiz | 0 | - | 4.87 | 39,146 |
| Palau Country Quiz | 0 | - | 4.90 | 22,900 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,665 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,540 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,810,095 |
| One Border Countries | 0 | - | 4.98 | 465,978 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,599,585 |
| Colombia Country Quiz | 0 | - | 4.90 | 40,465 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,701 |
| Brunei Country Quiz | 0 | - | 4.87 | 21,817 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,416 |
| Jordan Country Quiz | 0 | - | 4.86 | 31,519 |
| Lesotho Country Quiz | 0 | - | 4.82 | 20,478 |
| Mauritius Country Quiz | 0 | - | 4.84 | 22,152 |
| Liberia Country Quiz | 0 | - | 4.85 | 21,774 |
| Mali Country Quiz | 0 | - | 4.84 | 24,680 |
