| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,599 |
| Battle to Country | 0 | - | 4.91 | 54,105 |
| Independence from Whom | 0 | - | 4.99 | 213,400 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,663 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,925 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,275 |
| Countries by Founding Story | 0 | - | 4.95 | 77,907 |
| Recently Independent Countries | 0 | - | 4.98 | 160,510 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,169 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,074 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,470 |
| Countries by Former Name | 0 | - | 4.99 | 125,971 |
| Historical City to Country | 0 | - | 4.85 | 79,098 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,967,618 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,608 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,015 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,607 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,278 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,571 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,924 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,867 |
| Countries in World War I | 0 | - | 4.88 | 229,422 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,472 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,170 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,447 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,928 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,725 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 89,341 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,724 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,743 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,977 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,226 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,825 |
| Every Country Shape | 0 | - | 5.00 | 472,439 |
| Landlocked Countries | 0 | - | 4.99 | 427,228 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,812,236 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,105 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,363 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,931 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 139,649 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,623 |
| Orthodox Countries | 0 | - | 4.92 | 132,951 |
| Monarchies of Europe | 0 | - | 4.90 | 99,022 |
| Monarchies of Asia | 0 | - | 4.97 | 71,600 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,289 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,350 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,676 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,048 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 165,410 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 40,323 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 34,687 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 105,258 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 112,235 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 123,098 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 109,030 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 81,206 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,738 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 86,456 |
| Cartoon Versions of Countries | 0 | - | 4.99 | 95,887 |
| Country Shapes Under the Sea | 0 | - | 5.00 | 78,319 |
| A Square of Merged Countries #1 | 0 | - | 4.89 | 60,182 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,692 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,596 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,036 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,346 |
| Island Countries | 0 | - | 4.99 | 713,006 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,902 |
| Himalayan Countries | 0 | - | 4.93 | 140,816 |
| Andean Countries | 0 | - | 4.94 | 85,795 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,912 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,482 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,462 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,687 |
| Danube Countries | 0 | - | 4.97 | 72,552 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,799 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,971 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,436 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,914 |
| European Landlocked Countries | 0 | - | 4.99 | 147,739 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,536 |
| Countries with the Most Species | 0 | - | 4.99 | 103,645 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,634 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,814 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,953 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,923 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,679 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,126 |
| Countries in the Alps | 0 | - | 4.87 | 118,970 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,984 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,130 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,170 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,126 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,389 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,593 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,990 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,513 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,313 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,953 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,831 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,673 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,924 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,019 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,144 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,732 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,432 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,838 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,297 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,489 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,614 |
| Largest Countries By Category | 0 | - | 4.97 | 159,090 |
| Countries by Countries | 0 | - | 4.97 | 63,805 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,985 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,440 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,450 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,419 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,549 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,227 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,142 |
| Northernmost Countries | 0 | - | 4.99 | 364,586 |
| Countries of South America | 0 | - | 5.00 | 934,247 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,465 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,942 |
| "Land" Countries | 0 | - | 4.98 | 338,990 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,863 |
| Countries by Independence Day | 0 | - | 4.62 | 52,880 |
| Former Countries by Capital | 0 | - | 4.45 | 127,890 |
| Former Countries | 0 | - | 4.77 | 134,317 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,099 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,962 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,478 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,711 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,943 |
| Countries Connected in the World Map #2 | 0 | - | 4.97 | 81,357 |
| Countries Connected in the World Map #1 | 0 | - | 4.97 | 78,018 |
| Countries Connected in the World Map #3 | 0 | - | 4.97 | 77,251 |
| Countries in a Ring of the World Map | 0 | - | 4.99 | 155,706 |
| Countries in a Strip of the World Map | 0 | - | 4.99 | 74,265 |
| Countries in a Stewart of the World Map | 0 | - | 4.99 | 55,632 |
| Communist Countries in History | 0 | - | 4.63 | 498,725 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,413,636 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,051 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,936 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,810 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,000 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,970 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,494 |
| Countries with Megacities | 0 | - | 4.99 | 267,840 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,144 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,336 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,470 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,433 |
| Countries by Official Language | 0 | - | 4.95 | 196,216 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,941 |
| Countries in World War II | 0 | - | 4.54 | 920,221 |
| Countries in their Native Language | 0 | - | 4.99 | 199,956 |
| Subdivisions by Country | 0 | - | 4.87 | 50,665 |
| Megadiverse Countries | 0 | - | 4.96 | 149,003 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,136 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,576 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,805 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,467 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,625 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,165 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,286 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.97 | 102,033 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,766 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,488 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,507 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,217 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,638 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,974 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,723 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 73,104 |
| World Map Quiz | 0 | - | 4.81 | 65,924 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,883 |
| Countries in an Empty Ring of the World Map | 0 | - | 4.92 | 127,395 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,253 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,815 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,726 |
| Countries by Road Signs | 0 | - | 4.98 | 54,447 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 86,946 |
| Every European Country Shape | 0 | - | 4.96 | 203,240 |
| Every Asian Country Shape | 0 | - | 4.95 | 88,707 |
| Every African Country Shape | 0 | - | 4.90 | 88,602 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 65,285 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,751 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 60,560 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.87 | 42,348 |
| Country Flag-Shape Picture Quiz #1 | 0 | - | 4.94 | 95,521 |
| Country Flag-Shape Picture Quiz #2 | 0 | - | 4.90 | 73,364 |
| Country Flag-Shape Picture Quiz #4 | 0 | - | 4.96 | 72,217 |
| Country Flag-Shape Picture Quiz #6 | 0 | - | 4.98 | 70,231 |
| Country Flag-Shape Picture Quiz #5 | 0 | - | 4.97 | 62,233 |
| Country Flag-Shape Picture Quiz #7 | 0 | - | 4.96 | 59,339 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,510 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,233 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,704 |
