| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,678 |
| Battle to Country | 0 | - | 4.91 | 53,166 |
| Independence from Whom | 0 | - | 4.99 | 211,323 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,717 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,382 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,982 |
| Countries by Founding Story | 0 | - | 4.95 | 77,074 |
| Recently Independent Countries | 0 | - | 4.98 | 159,022 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,601 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,775 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,421 |
| Countries by Former Name | 0 | - | 4.99 | 124,928 |
| Historical City to Country | 0 | - | 4.84 | 78,440 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,337,307 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,403 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,115 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,089 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,489 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,161 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,444 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,088 |
| Countries in World War I | 0 | - | 4.88 | 227,850 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,730 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,288 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,988 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,821 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,451 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,912 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,829 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,492 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,304 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 906,467 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,346 |
| Every Country Shape | 0 | - | 5.00 | 463,894 |
| Landlocked Countries | 0 | - | 4.99 | 418,991 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,114 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,053 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,597 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,867 |
| World Map without 12 Countries #3 | 0 | - | 4.98 | 137,970 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,126 |
| Orthodox Countries | 0 | - | 4.92 | 131,339 |
| Monarchies of Europe | 0 | - | 4.90 | 97,976 |
| Monarchies of Asia | 0 | - | 4.97 | 70,991 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,629 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,784 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,619 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,264 |
| Country Shapes Quiz #5 | 0 | - | 4.93 | 163,907 |
| Recognize Countries by Tripoint Maps #1 | 0 | - | 4.99 | 36,263 |
| Country Shapes in the World Map #3 | 0 | - | 4.99 | 104,282 |
| Country Shapes in the World Map #2 | 0 | - | 4.99 | 111,321 |
| Country Shapes in the World Map #1 | 0 | - | 4.99 | 121,983 |
| Country Shapes in the World Map #4 | 0 | - | 4.98 | 108,159 |
| Country Shapes in the World Map #6 | 0 | - | 4.98 | 80,519 |
| Country Shapes in the World Map #7 | 0 | - | 4.99 | 58,053 |
| Country Shapes in the World Map #5 | 0 | - | 4.98 | 85,740 |
| Cartoon Versions of Countries | 0 | - | 4.99 | 95,094 |
| Country Shapes Under the Sea | 0 | - | 5.00 | 77,605 |
| A Square of Merged Countries #1 | 0 | - | 4.88 | 59,409 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,492 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,034 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,619 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,131 |
| Island Countries | 0 | - | 4.99 | 709,777 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,013 |
| Himalayan Countries | 0 | - | 4.94 | 137,446 |
| Andean Countries | 0 | - | 4.95 | 83,949 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,677 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,840 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,359 |
| Danube Countries | 0 | - | 4.97 | 71,668 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,559 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,061 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,663 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,739 |
| European Landlocked Countries | 0 | - | 4.99 | 146,781 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,143 |
| Countries with the Most Species | 0 | - | 4.99 | 102,913 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,275 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,433 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,589 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,306 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,994 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,368 |
| Countries in the Alps | 0 | - | 4.87 | 117,698 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,138 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,373 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,425 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,992 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,102 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,615 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,290 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,192 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,971 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,557 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,482 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,341 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,929 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,190 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,210 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,195 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,066 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,575 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,533 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,402 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,238 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,001 |
| Largest Countries By Category | 0 | - | 4.97 | 157,646 |
| Countries by Countries | 0 | - | 4.96 | 62,844 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,794 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,214 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,162 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,469 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,533 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,659 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,327 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,092 |
| Northernmost Countries | 0 | - | 4.99 | 360,496 |
| Countries of South America | 0 | - | 5.00 | 922,959 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,104 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,478 |
| "Land" Countries | 0 | - | 4.98 | 335,802 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,330 |
| Countries by Independence Day | 0 | - | 4.61 | 52,714 |
| Former Countries by Capital | 0 | - | 4.45 | 127,367 |
| Former Countries | 0 | - | 4.75 | 133,481 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,758 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,031 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,385 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 132,064 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,967 |
| Countries Connected in the World Map #2 | 0 | - | 4.97 | 80,267 |
| Countries Connected in the World Map #1 | 0 | - | 4.97 | 76,968 |
| Countries Connected in the World Map #3 | 0 | - | 4.97 | 76,215 |
| Countries in a Ring of the World Map | 0 | - | 4.99 | 154,238 |
| Countries in a Strip of the World Map | 0 | - | 4.99 | 73,384 |
| Countries in a Stewart of the World Map | 0 | - | 4.99 | 54,955 |
| Communist Countries in History | 0 | - | 4.63 | 495,002 |
| Recognize Countries by Tripoint Maps #2 | 0 | - | 4.98 | 30,467 |
| World Map Without 20 Random Countries | 0 | - | 4.99 | 8,300,862 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,939 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,815 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,857 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,342 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,759 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,032 |
| Countries with Megacities | 0 | - | 4.99 | 260,208 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,908 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,001 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,182 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,009 |
| Countries by Official Language | 0 | - | 4.95 | 194,645 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,546 |
| Countries in World War II | 0 | - | 4.54 | 911,037 |
| Countries in their Native Language | 0 | - | 4.99 | 198,192 |
| Subdivisions by Country | 0 | - | 4.86 | 50,288 |
| Megadiverse Countries | 0 | - | 4.96 | 134,770 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,550 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,186 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,758 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,018 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,716 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,846 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,490 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,991 |
| Countries with Four Letters - Shape Quiz | 0 | - | 4.97 | 101,312 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,988 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,721 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,995 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,779 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,157 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,327 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,203 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,569 |
| World Map Quiz | 0 | - | 4.81 | 64,528 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,626 |
| Countries in an Empty Ring of the World Map | 0 | - | 4.93 | 126,289 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,817 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,036 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,761 |
| Countries by Road Signs | 0 | - | 4.98 | 53,654 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 86,365 |
| Every European Country Shape | 0 | - | 4.96 | 201,350 |
| Every Asian Country Shape | 0 | - | 4.95 | 87,587 |
| Every African Country Shape | 0 | - | 4.90 | 87,067 |
| One Border Countries - Shape Quiz | 0 | - | 4.84 | 64,796 |
| Merged Country Shapes Quiz #1 | 0 | - | 4.93 | 59,289 |
| Merged Country Shapes Quiz #2 | 0 | - | 4.92 | 60,109 |
| Merged Country Shapes Quiz #3 | 0 | - | 4.86 | 41,929 |
| Country Flag-Shape Picture Quiz #1 | 0 | - | 4.94 | 94,659 |
| Country Flag-Shape Picture Quiz #2 | 0 | - | 4.89 | 72,682 |
| Country Flag-Shape Picture Quiz #4 | 0 | - | 4.96 | 71,639 |
| Country Flag-Shape Picture Quiz #6 | 0 | - | 4.98 | 69,602 |
| Country Flag-Shape Picture Quiz #5 | 0 | - | 4.97 | 61,710 |
| Country Flag-Shape Picture Quiz #7 | 0 | - | 4.96 | 58,800 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,513 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,934 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,644 |
