| Countries of the World Quiz | 0 | - | 5.00 | 47,310,020 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,664 |
| Landlocked Countries | 0 | - | 4.99 | 418,520 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,414 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,195 |
| Countries with Glaciers | 0 | - | 4.97 | 105,013 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,389 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,535 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,625 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,769 |
| Himalayan Countries | 0 | - | 4.94 | 137,235 |
| Andean Countries | 0 | - | 4.95 | 83,836 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,088 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,489 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,762 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,288 |
| Danube Countries | 0 | - | 4.97 | 71,611 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,487 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,011 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,571 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,633 |
| European Landlocked Countries | 0 | - | 4.99 | 146,724 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,069 |
| Countries with the Most Species | 0 | - | 4.99 | 102,863 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,205 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,415 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,573 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,275 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,949 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,326 |
| Countries in the Alps | 0 | - | 4.87 | 117,625 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,090 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,292 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,382 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,939 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,046 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,415 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,231 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,146 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,942 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,517 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,453 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,315 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,891 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,163 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,179 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,112 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,035 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,550 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,471 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,206 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,129 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,968 |
| Largest Countries By Category | 0 | - | 4.97 | 157,570 |
| Countries by Countries | 0 | - | 4.96 | 62,801 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,152 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,290 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,663 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,496 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,912 |
| Island Countries | 0 | - | 4.99 | 709,600 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,677 |
| Northernmost Countries | 0 | - | 4.99 | 360,319 |
| Countries of South America | 0 | - | 5.00 | 922,478 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,426 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,375 |
| "Land" Countries | 0 | - | 4.98 | 335,709 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,938 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,897 |
| Countries with Megacities | 0 | - | 4.99 | 257,016 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,760 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,919 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,061 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,925 |
| Countries by Official Language | 0 | - | 4.95 | 194,581 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,454 |
| Countries in their Native Language | 0 | - | 4.99 | 198,123 |
| Independence from Whom | 0 | - | 4.99 | 211,229 |
| Subdivisions by Country | 0 | - | 4.86 | 50,271 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,638 |
| Megadiverse Countries | 0 | - | 4.96 | 134,743 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,495 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,162 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,730 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,672 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,359 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,917 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,820 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,972 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,881 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,692 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,966 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,754 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,119 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,306 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,100 |
| World Map Quiz | 0 | - | 4.81 | 64,457 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,436 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,999 |
| Countries by Founding Story | 0 | - | 4.95 | 77,035 |
| Countries by Road Signs | 0 | - | 4.98 | 53,620 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,431 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,890 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,599 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,252 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,485 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,646 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,796 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,246 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,255 |
| Widest Countries East to West | 0 | - | 4.92 | 129,336 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,917 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,983 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,487 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,177 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,512 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,221 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,723 |
| Countries with Double Letters | 0 | - | 4.97 | 95,030 |
| Countries that End in N | 0 | - | 4.95 | 169,871 |
| Countries with Five Letters | 0 | - | 4.96 | 279,767 |
| Countries with Six Letters | 0 | - | 4.94 | 212,408 |
| Countries with W | 0 | - | 4.97 | 159,487 |
| Countries with Z | 0 | - | 4.98 | 289,726 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,682 |
| Countries That End in U | 0 | - | 4.95 | 120,386 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,703 |
| Countries that End in O | 0 | - | 4.92 | 159,176 |
| Countries that End in R | 0 | - | 4.87 | 118,721 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,497 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,256 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,070 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,060 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,643 |
| Countries That End in Y | 0 | - | 4.90 | 185,633 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,183 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,383 |
| Countries that End in I | 0 | - | 4.94 | 134,846 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,033 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,557 |
| Countries That End in NIA | 0 | - | 4.92 | 109,496 |
| Countries That End in BIA | 0 | - | 4.93 | 148,813 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,675 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,023 |
| Countries That End in RIA | 0 | - | 4.93 | 126,509 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,596 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,599 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,174 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,524 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,073 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,295 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,651 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,206 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,084 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,180 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,790 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,499 |
| Countries that End in L | 0 | - | 4.94 | 156,524 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,874 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,148 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,817 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,699 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,750 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,717 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,123 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,581 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,071 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,565 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,552 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,939 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,585 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,639 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,797 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,602 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,394 |
| One Border Countries | 0 | - | 4.98 | 467,498 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,392 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,567 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,515 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,336 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,644 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,244 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,332 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,890 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,043 |
| Countries by National Anthem | 0 | - | 4.93 | 71,170 |
| NATO Countries | 0 | - | 4.98 | 279,146 |
| EU Countries Quiz | 0 | - | 4.99 | 272,757 |
| Recently Independent Countries | 0 | - | 4.98 | 158,971 |
| French-Speaking Countries | 0 | - | 4.85 | 270,155 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,746 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,486 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,336 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,742 |
| German-Speaking Countries | 0 | - | 4.91 | 145,264 |
