| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,989 |
| Battle to Country | 0 | - | 4.91 | 52,487 |
| Independence from Whom | 0 | - | 4.99 | 209,602 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,686 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,973 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,838 |
| Countries by Founding Story | 0 | - | 4.95 | 76,495 |
| Recently Independent Countries | 0 | - | 4.98 | 157,942 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,436 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,063 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,762 |
| Countries by Former Name | 0 | - | 4.99 | 124,243 |
| Historical City to Country | 0 | - | 4.84 | 78,114 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,893,550 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,150 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,239 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,220 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,564 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,530 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,766 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,162 |
| Countries in World War I | 0 | - | 4.88 | 226,553 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,355 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,819 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,262 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,389 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,262 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,878 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,282 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,676 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,844 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 903,987 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,686 |
| Every Country Shape | 0 | - | 5.00 | 458,601 |
| Landlocked Countries | 0 | - | 4.99 | 413,303 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,900 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,341 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,556 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,243 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 136,945 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,974 |
| Orthodox Countries | 0 | - | 4.91 | 130,335 |
| Monarchies of Europe | 0 | - | 4.90 | 97,279 |
| Monarchies of Asia | 0 | - | 4.97 | 70,579 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,171 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,420 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,222 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,142 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 161,679 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 34,311 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 103,289 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 110,614 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,216 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 107,260 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 79,997 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 57,526 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,008 |
| Cartoon Versions of Countries | 0 | - | 4.99 | 94,581 |
| Country Shapes Under the Sea | 0 | - | 5.00 | 77,144 |
| A Square of Merged Countries #1 | 0 | - | 4.88 | 58,934 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,548 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,479 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,014 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,609 |
| Island Countries | 0 | - | 4.99 | 707,487 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,446 |
| Himalayan Countries | 0 | - | 4.95 | 135,232 |
| Andean Countries | 0 | - | 4.94 | 82,765 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,175 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,114 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,846 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,550 |
| Danube Countries | 0 | - | 4.97 | 71,047 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,715 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,504 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,402 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,328 |
| European Landlocked Countries | 0 | - | 4.99 | 145,718 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,148 |
| Countries with the Most Species | 0 | - | 4.99 | 95,228 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,290 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,357 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,941 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,549 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,921 |
| Countries in the Alps | 0 | - | 4.87 | 116,772 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,527 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,189 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,986 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,391 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,971 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,532 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,726 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,111 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,022 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,183 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,024 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,419 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,714 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,723 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,001 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,612 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,239 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,736 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,095 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,540 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,576 |
| Largest Countries By Category | 0 | - | 4.97 | 156,702 |
| Countries by Countries | 0 | - | 4.96 | 62,227 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,456 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,329 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,952 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,318 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,561 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,075 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,722 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,061 |
| Northernmost Countries | 0 | - | 4.99 | 357,547 |
| Countries of South America | 0 | - | 5.00 | 914,167 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,755 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,145 |
| "Land" Countries | 0 | - | 4.98 | 333,558 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,930 |
| Countries by Independence Day | 0 | - | 4.56 | 52,596 |
| Former Countries by Capital | 0 | - | 4.45 | 127,024 |
| Former Countries | 0 | - | 4.75 | 132,663 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,730 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,187 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,338 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,201 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,052 |
| Countries Connected in the World Map #2 | 0 | - | 4.97 | 79,545 |
| Countries Connected in the World Map #1 | 0 | - | 4.97 | 76,271 |
| Countries Connected in the World Map #3 | 0 | - | 4.97 | 75,540 |
| Countries in a Ring of the World Map | 0 | - | 4.99 | 153,493 |
| Countries in a Strip of the World Map | 0 | - | 4.99 | 72,769 |
| Countries in a Stewart of the World Map | 0 | - | 4.99 | 54,580 |
| Communist Countries in History | 0 | - | 4.63 | 492,360 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.99 | 27,915 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,222,057 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,210 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,087 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,480 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,491 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,477 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,000 |
| Countries with Megacities | 0 | - | 4.99 | 246,523 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,917 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,799 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,369 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,756 |
| Countries by Official Language | 0 | - | 4.95 | 192,707 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,038 |
| Countries in World War II | 0 | - | 4.53 | 904,135 |
| Countries in their Native Language | 0 | - | 4.99 | 196,561 |
| Subdivisions by Country | 0 | - | 4.86 | 50,050 |
| Megadiverse Countries | 0 | - | 4.97 | 133,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,738 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,904 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,407 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,607 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,120 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,203 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,732 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.97 | 100,790 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,504 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,398 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,475 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,645 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,004 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,493 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,243 |
| World Map Quiz | 0 | - | 4.81 | 63,454 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,483 |
| Countries in an Empty Ring of the World Map | 0 | - | 4.92 | 125,519 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,933 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,286 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,064 |
| Countries by Road Signs | 0 | - | 4.98 | 53,066 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 85,782 |
| Every European Country Shape | 0 | - | 4.96 | 200,071 |
| Every Asian Country Shape | 0 | - | 4.95 | 86,641 |
| Every African Country Shape | 0 | - | 4.90 | 86,039 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 64,489 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,005 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 59,809 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.86 | 41,633 |
| Country Flag-Shape Picture Quiz #1 | 0 | - | 4.94 | 94,023 |
| Country Flag-Shape Picture Quiz #2 | 0 | - | 4.89 | 72,219 |
| Country Flag-Shape Picture Quiz #4 | 0 | - | 4.96 | 71,216 |
| Country Flag-Shape Picture Quiz #6 | 0 | - | 4.98 | 69,124 |
| Country Flag-Shape Picture Quiz #5 | 0 | - | 4.97 | 61,277 |
| Country Flag-Shape Picture Quiz #7 | 0 | - | 4.96 | 58,365 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,272 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,947 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,908 |
