| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,086 |
| North Sea Countries | 0 | - | 4.92 | 87,509 |
| Black Sea Countries | 0 | - | 4.87 | 60,662 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,461 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,562 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,156 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,739 |
| Countries With No Rivers | 0 | - | 4.96 | 76,937 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,288 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,005 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,670 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,825 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,911 |
| Countries with Fjords | 0 | - | 4.94 | 101,068 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,081 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,440 |
| Seas on the World Map | 0 | - | 4.96 | 135,572 |
| Seas of the World | 0 | - | 5.00 | 157,501 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,624 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,121 |
| African Great Lakes | 0 | - | 4.82 | 66,544 |
| Seas of Europe | 0 | - | 4.37 | 84,733 |
| Megadiverse Countries | 0 | - | 4.96 | 135,054 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,544 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,478 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,660 |
| Biggest City by River | 0 | - | 4.38 | 52,892 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,997 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,313 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,772 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,323 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,831 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,250 |
| African Physical Geography | 0 | - | 4.51 | 31,749 |
| Asian Physical Geography | 0 | - | 4.61 | 35,567 |
| Rivers of the United States | 0 | - | 4.93 | 66,370 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,822 |
| Countries with Glaciers | 0 | - | 4.96 | 105,575 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,702 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,768 |
| Landforms by Country | 0 | - | 4.52 | 51,989 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,406 |
| World's Longest Rivers | 0 | - | 4.90 | 137,086 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,683 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,285 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,985 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,604 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,030 |
| Capitals by River | 0 | - | 4.55 | 48,347 |
| Geological Extremes | 0 | - | 4.34 | 40,065 |
| European Physical Geography | 0 | - | 4.26 | 33,542 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,798 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,038 |
| Boundary Waters | 0 | - | 4.92 | 88,598 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,269 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,319 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,616,450 |
| Landlocked Countries | 0 | - | 4.99 | 422,405 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,484 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,043 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,942 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,392 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 107,328 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,701 |
| South American Physical Geography | 0 | - | 4.58 | 18,369 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,726 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,466 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,480 |
| World Capitals Quiz | 0 | - | 5.00 | 5,085,812 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,732 |
| Himalayan Countries | 0 | - | 4.95 | 138,924 |
| Andean Countries | 0 | - | 4.93 | 84,738 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,942 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,006 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,553 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,889 |
| Danube Countries | 0 | - | 4.97 | 72,074 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,093 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,476 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,406 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,889 |
| European Landlocked Countries | 0 | - | 4.99 | 147,197 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,730 |
| Countries with the Most Species | 0 | - | 4.99 | 103,280 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,851 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,620 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,741 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,578 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,272 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,713 |
| Countries in the Alps | 0 | - | 4.87 | 118,279 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,388 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,124 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,696 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,640 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,565 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,985 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,724 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,547 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,899 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,553 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,263 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,519 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,574 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,007 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,351 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,289 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,149 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,153 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,252 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,269 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,619 |
| Largest Countries By Category | 0 | - | 4.97 | 158,292 |
| Least-Forested Countries | 0 | - | 4.53 | 65,296 |
| Countries by Countries | 0 | - | 4.96 | 63,289 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,195 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,715 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,666 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,647 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,846 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,467 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,746 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,868 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,543 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,510 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,749 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,507 |
| Famous Rivers | 0 | - | 4.75 | 105,085 |
| City to River #1 | 0 | - | 4.59 | 35,868 |
| Rivers A-Z | 0 | - | 4.35 | 32,805 |
| Most Populous River Basins | 0 | - | 4.55 | 39,751 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,394 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,340 |
| Sea in the Answers | 0 | - | 4.08 | 49,036 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,106 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,328 |
| Longest International Borders | 0 | - | 4.99 | 265,264 |
| Countries with Three Borders | 0 | - | 4.96 | 36,628 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,147 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,250 |
| Demonym of Every Country | 0 | - | 4.91 | 60,817 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,166 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,915 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,596 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,629 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,607 |
| Island Countries | 0 | - | 4.99 | 711,189 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,730 |
| Countries with Tropical Rainforest and Glaciers | 0 | - | 4.51 | 55,699 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,426 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,395 |
| Northernmost Countries | 0 | - | 4.99 | 362,165 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,866 |
| Countries of South America | 0 | - | 5.00 | 927,967 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,703 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,656 |
| "Land" Countries | 0 | - | 4.98 | 337,458 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,119 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,594 |
| All Country Flags of the World | 0 | - | 5.00 | 3,682,773 |
| Top World Languages | 0 | - | 4.92 | 824,886 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,564 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,327 |
| Elements Named for Countries | 0 | - | 4.53 | 24,823 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,885 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,548 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,865 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,131 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,014 |
| Countries with Megacities | 0 | - | 4.99 | 264,851 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,848 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,532 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,107 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,611 |
| Biggest Cities in the World | 0 | - | 4.91 | 801,418 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,630 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,591 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,587 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,720 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,549 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,405 |
| Countries by Capital City | 0 | - | 5.00 | 68,696 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,407 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 114,850 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,284 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,444 |
| Moved Capital Cities | 0 | - | 4.96 | 74,378 |
| Countries by Official Language | 0 | - | 4.95 | 195,331 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,496 |
| Countries in their Native Language | 0 | - | 4.99 | 199,127 |
| Independence from Whom | 0 | - | 4.99 | 212,200 |
| Subdivisions by Country | 0 | - | 4.87 | 50,447 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,804 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,177 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,381 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,260 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,122 |
