| Countries With No Rivers | 0 | - | 4.96 | 76,078 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,328 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,821 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,286 |
| African Great Lakes | 0 | - | 4.82 | 65,310 |
| Biggest City by River | 0 | - | 4.41 | 52,709 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,410 |
| Countries with Fjords | 0 | - | 4.93 | 100,269 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,105 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,907 |
| Capitals by River | 0 | - | 4.55 | 48,243 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,866 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,842 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,271 |
| Rivers of the United States | 0 | - | 4.93 | 65,598 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,768 |
| North Sea Countries | 0 | - | 4.92 | 86,659 |
| Black Sea Countries | 0 | - | 4.87 | 60,365 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,055 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,146 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,977 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,402 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,338 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 35,929 |
| Megadiverse Countries | 0 | - | 4.97 | 133,965 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,349 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,488 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,677 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,354 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,559 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 86,461 |
| Asian Physical Geography | 0 | - | 4.61 | 35,386 |
| Countries with Glaciers | 0 | - | 4.97 | 104,718 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,698 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,284 |
| Countries with the Most Sheep | 0 | - | 4.92 | 102,481 |
| Seas of Europe | 0 | - | 4.37 | 83,846 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,739 |
| Landforms by Country | 0 | - | 4.52 | 51,922 |
| Rivers A-Z | 0 | - | 4.35 | 32,702 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,010 |
| Sea in the Answers | 0 | - | 4.10 | 48,591 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 111,557 |
| Countries with the Most Wolves | 0 | - | 4.92 | 107,094 |
| Geological Extremes | 0 | - | 4.34 | 39,952 |
| African Physical Geography | 0 | - | 4.51 | 31,582 |
| European Physical Geography | 0 | - | 4.26 | 33,385 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,944 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,694 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,690 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,497 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,222 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 59,805 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,720 |
| Boundary Waters | 0 | - | 4.92 | 88,085 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,854 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,396 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,985,889 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,335 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,826 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,659 |
| Animal Populations of Countries | 0 | - | 4.51 | 43,634 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,932 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 137,920 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,185 |
| Top 15 Countries with the Most Cows | 0 | - | 4.64 | 92,795 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,638 |
| South American Physical Geography | 0 | - | 4.58 | 18,281 |
| World Capitals Quiz | 0 | - | 5.00 | 5,036,872 |
| Landlocked Countries | 0 | - | 4.99 | 414,414 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,508 |
| Least-Forested Countries | 0 | - | 4.53 | 64,933 |
| Tropical Rainforest Countries | 0 | - | 4.68 | 81,764 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,480 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,139 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,723,330 |
| Countries with More Cows than People | 0 | - | 4.43 | 54,735 |
| Northernmost Countries Without Glaciers | 0 | - | 4.61 | 36,083 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,221 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,963 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,192 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,939 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,572,870 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,417 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,230 |
| Island Countries | 0 | - | 4.99 | 707,924 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,926 |
| Himalayan Countries | 0 | - | 4.95 | 135,638 |
| Andean Countries | 0 | - | 4.94 | 82,989 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,343 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,393 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,044 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,716 |
| Danube Countries | 0 | - | 4.97 | 71,159 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,869 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,619 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,657 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,561 |
| European Landlocked Countries | 0 | - | 4.99 | 145,861 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,328 |
| Countries with the Most Species | 0 | - | 4.99 | 95,289 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,477 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,228 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,396 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,006 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,644 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,010 |
| Countries in the Alps | 0 | - | 4.86 | 116,954 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,657 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,420 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,081 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,491 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,269 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,073 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,671 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,825 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,563 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,130 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,224 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,089 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,518 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,812 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,816 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,237 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,722 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,302 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,877 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,734 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,933 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,674 |
| Largest Countries By Category | 0 | - | 4.97 | 156,889 |
| Countries by Countries | 0 | - | 4.96 | 62,341 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,600 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,021 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,843 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,550 |
| Northernmost Countries | 0 | - | 4.99 | 358,153 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,698 |
| Countries of South America | 0 | - | 5.00 | 916,151 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,267 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,149 |
| "Land" Countries | 0 | - | 4.98 | 333,867 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 68,711 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,111 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,794 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,516 |
| All Country Flags of the World | 0 | - | 5.00 | 3,609,858 |
| Top World Languages | 0 | - | 4.92 | 814,173 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,611 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,259 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,652 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,687 |
| Longest International Borders | 0 | - | 4.99 | 263,949 |
| Countries with Three Borders | 0 | - | 4.96 | 36,239 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,640 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,734 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 118,596 |
| Demonym of Every Country | 0 | - | 4.91 | 58,722 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,260 |
| Elements Named for Countries | 0 | - | 4.52 | 24,439 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,693 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,191 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,418 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,976 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,641 |
| Countries with Megacities | 0 | - | 4.99 | 247,605 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,487 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,212 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,896 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,139 |
| Biggest Cities in the World | 0 | - | 4.91 | 791,472 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,980 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,126 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,762 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,716 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,807 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,636 |
| Countries by Capital City | 0 | - | 5.00 | 66,842 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,441 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,999 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,785 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,489 |
| Moved Capital Cities | 0 | - | 4.96 | 73,672 |
| Countries by Official Language | 0 | - | 4.95 | 192,948 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,369 |
| Countries in their Native Language | 0 | - | 4.99 | 196,797 |
| Independence from Whom | 0 | - | 4.99 | 209,904 |
| Subdivisions by Country | 0 | - | 4.86 | 50,104 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,900 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,958 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,957 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,468 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,877 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,766 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,056 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,190 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,222 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,253 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,761 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,742 |
