| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,967 |
| Battle to Country | 0 | - | 4.91 | 52,470 |
| Independence from Whom | 0 | - | 4.99 | 209,557 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,640 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,963 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,639 |
| Countries by Founding Story | 0 | - | 4.95 | 76,476 |
| Recently Independent Countries | 0 | - | 4.98 | 157,912 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,383 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,004 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,683 |
| Countries by Former Name | 0 | - | 4.99 | 124,204 |
| Historical City to Country | 0 | - | 4.84 | 78,103 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,878,185 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,111 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,217 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,202 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,552 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,517 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,750 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,148 |
| Countries in World War I | 0 | - | 4.88 | 226,506 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,306 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,795 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,181 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,341 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,250 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,852 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,237 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,648 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,834 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,808 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,556 |
| Every Country Shape | 0 | - | 5.00 | 458,352 |
| Landlocked Countries | 0 | - | 4.99 | 413,146 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,376 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,312 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,529 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,171 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 136,884 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,929 |
| Orthodox Countries | 0 | - | 4.91 | 130,304 |
| Monarchies of Europe | 0 | - | 4.90 | 97,252 |
| Monarchies of Asia | 0 | - | 4.97 | 70,560 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,160 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,405 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,109 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,034 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 160,890 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,223 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,250 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,589 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,173 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,236 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 79,975 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,505 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 84,982 |
| Cartoon Versions of Countries | 0 | - | 4.99 | 94,561 |
| Country Shapes Under the Sea | 0 | - | 5.00 | 77,121 |
| A Square of Merged Countries #1 | 0 | - | 4.88 | 58,911 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,529 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,336 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,951 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,300 |
| Island Countries | 0 | - | 4.99 | 707,386 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,381 |
| Himalayan Countries | 0 | - | 4.95 | 135,157 |
| Andean Countries | 0 | - | 4.94 | 82,730 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,146 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,078 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,818 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,512 |
| Danube Countries | 0 | - | 4.97 | 71,031 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,693 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,485 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,360 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,279 |
| European Landlocked Countries | 0 | - | 4.99 | 145,701 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,108 |
| Countries with the Most Species | 0 | - | 4.99 | 95,215 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,260 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,188 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,351 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,928 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,540 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,897 |
| Countries in the Alps | 0 | - | 4.87 | 116,743 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,512 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,155 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,969 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,364 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,097 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,958 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,510 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,711 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,869 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,008 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,013 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,396 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,702 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,708 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,960 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,593 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,218 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,720 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,993 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,474 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,565 |
| Largest Countries By Category | 0 | - | 4.97 | 156,674 |
| Countries by Countries | 0 | - | 4.96 | 62,209 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,874 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,294 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,946 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,310 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,506 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,042 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,706 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,798 |
| Northernmost Countries | 0 | - | 4.99 | 357,436 |
| Countries of South America | 0 | - | 5.00 | 913,907 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,280 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,420 |
| "Land" Countries | 0 | - | 4.98 | 333,506 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,902 |
| Countries by Independence Day | 0 | - | 4.56 | 52,591 |
| Former Countries by Capital | 0 | - | 4.45 | 126,998 |
| Former Countries | 0 | - | 4.75 | 132,631 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,704 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,155 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,327 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,188 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,031 |
| Countries Connected in the World Map #2 | 0 | - | 4.97 | 79,523 |
| Countries Connected in the World Map #1 | 0 | - | 4.97 | 76,246 |
| Countries Connected in the World Map #3 | 0 | - | 4.97 | 75,514 |
| Countries in a Ring of the World Map | 0 | - | 4.99 | 153,470 |
| Countries in a Strip of the World Map | 0 | - | 4.99 | 72,746 |
| Countries in a Stewart of the World Map | 0 | - | 4.99 | 54,561 |
| Communist Countries in History | 0 | - | 4.63 | 492,256 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.99 | 27,805 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,219,138 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,193 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,067 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,469 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,126 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,393 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,955 |
| Countries with Megacities | 0 | - | 4.99 | 246,405 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,870 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,775 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,326 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,729 |
| Countries by Official Language | 0 | - | 4.95 | 192,662 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,977 |
| Countries in World War II | 0 | - | 4.53 | 903,882 |
| Countries in their Native Language | 0 | - | 4.99 | 196,527 |
| Subdivisions by Country | 0 | - | 4.86 | 50,041 |
| Megadiverse Countries | 0 | - | 4.97 | 133,851 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,702 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,897 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,395 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,846 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,583 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,097 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,195 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,728 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.97 | 100,775 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,455 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,385 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,458 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,474 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,637 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,997 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,419 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,229 |
| World Map Quiz | 0 | - | 4.81 | 63,417 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,384 |
| Countries in an Empty Ring of the World Map | 0 | - | 4.92 | 125,488 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,906 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,265 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,046 |
| Countries by Road Signs | 0 | - | 4.98 | 53,041 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 85,773 |
| Every European Country Shape | 0 | - | 4.96 | 199,979 |
| Every Asian Country Shape | 0 | - | 4.95 | 86,559 |
| Every African Country Shape | 0 | - | 4.90 | 85,943 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 64,478 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 58,993 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 59,790 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.86 | 41,624 |
| Country Flag-Shape Picture Quiz #1 | 0 | - | 4.94 | 93,938 |
| Country Flag-Shape Picture Quiz #2 | 0 | - | 4.89 | 72,147 |
| Country Flag-Shape Picture Quiz #4 | 0 | - | 4.96 | 71,147 |
| Country Flag-Shape Picture Quiz #6 | 0 | - | 4.98 | 69,059 |
| Country Flag-Shape Picture Quiz #5 | 0 | - | 4.97 | 61,222 |
| Country Flag-Shape Picture Quiz #7 | 0 | - | 4.96 | 58,301 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,225 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,921 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,883 |
