| Natural Features of Countries #1 | 0 | - | 4.87 | 83,857 |
| Countries with Fjords | 0 | - | 4.94 | 100,949 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,690 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,035 |
| North Sea Countries | 0 | - | 4.92 | 87,423 |
| Black Sea Countries | 0 | - | 4.87 | 60,621 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,399 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,499 |
| Countries With No Rivers | 0 | - | 4.96 | 76,842 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,247 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,570 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,736 |
| African Great Lakes | 0 | - | 4.82 | 66,304 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,433 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,511 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,528 |
| Megadiverse Countries | 0 | - | 4.96 | 134,925 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,517 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,803 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,772 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,193 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,871 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,207 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,730 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,236 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,941 |
| Rivers of the United States | 0 | - | 4.93 | 66,232 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,176 |
| African Physical Geography | 0 | - | 4.51 | 31,717 |
| Asian Physical Geography | 0 | - | 4.61 | 35,541 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,807 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,567 |
| Countries with Glaciers | 0 | - | 4.97 | 105,468 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,600 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,689 |
| Landforms by Country | 0 | - | 4.52 | 51,972 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,308 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,093 |
| Capitals by River | 0 | - | 4.55 | 48,326 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,555 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,129 |
| Geological Extremes | 0 | - | 4.34 | 40,047 |
| European Physical Geography | 0 | - | 4.26 | 33,520 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 35,968 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,734 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,771 |
| Biggest City by River | 0 | - | 4.38 | 52,865 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 60,006 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,472 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,500,529 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,460 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 54,993 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,898 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,324 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,121 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,686 |
| South American Physical Geography | 0 | - | 4.58 | 18,357 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,275 |
| Seas of Europe | 0 | - | 4.37 | 84,676 |
| Boundary Waters | 0 | - | 4.92 | 88,501 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,193 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,157 |
| World Capitals Quiz | 0 | - | 5.00 | 5,077,181 |
| Landlocked Countries | 0 | - | 4.99 | 421,004 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,593 |
| Least-Forested Countries | 0 | - | 4.53 | 65,230 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,109 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,640 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,568 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,180 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,359 |
| Rivers A-Z | 0 | - | 4.35 | 32,787 |
| Sea in the Answers | 0 | - | 4.10 | 48,964 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,152 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,645 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,244 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,261 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,714 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,587,819 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,215 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,592 |
| Island Countries | 0 | - | 4.99 | 710,648 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,987 |
| Himalayan Countries | 0 | - | 4.95 | 138,293 |
| Andean Countries | 0 | - | 4.95 | 84,366 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,589 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,502 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,215 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,623 |
| Danube Countries | 0 | - | 4.97 | 71,898 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,868 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,289 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,085 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,559 |
| European Landlocked Countries | 0 | - | 4.99 | 147,028 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,457 |
| Countries with the Most Species | 0 | - | 4.99 | 103,147 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,604 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,533 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,674 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,468 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,150 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,554 |
| Countries in the Alps | 0 | - | 4.87 | 118,037 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,287 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,828 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,579 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,504 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,378 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,871 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,537 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,395 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,111 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,742 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,585 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,444 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,115 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,383 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,412 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,659 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,210 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,724 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,882 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,441 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,815 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,141 |
| Largest Countries By Category | 0 | - | 4.97 | 158,012 |
| Countries by Countries | 0 | - | 4.96 | 63,078 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,042 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,355 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,564 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,542 |
| Northernmost Countries | 0 | - | 4.99 | 361,494 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,831 |
| Countries of South America | 0 | - | 5.00 | 925,804 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,017 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,638 |
| "Land" Countries | 0 | - | 4.98 | 336,977 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,054 |
| Europe Map Quiz | 0 | - | 5.00 | 4,765,474 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,627 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,820 |
| All Country Flags of the World | 0 | - | 5.00 | 3,669,576 |
| Top World Languages | 0 | - | 4.92 | 822,868 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,407 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,461 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,723 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,231 |
| Longest International Borders | 0 | - | 4.99 | 265,011 |
| Countries with Three Borders | 0 | - | 4.96 | 36,558 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,044 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,156 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,333 |
| Demonym of Every Country | 0 | - | 4.91 | 60,390 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,312 |
| Elements Named for Countries | 0 | - | 4.53 | 24,732 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,835 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,413 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,553 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,538 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,621 |
| Countries with Megacities | 0 | - | 4.99 | 263,850 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,472 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,327 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,742 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,368 |
| Biggest Cities in the World | 0 | - | 4.91 | 799,571 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,246 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,337 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,459 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,558 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,310 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,107 |
| Countries by Capital City | 0 | - | 5.00 | 68,397 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,228 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,703 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,650 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,272 |
| Moved Capital Cities | 0 | - | 4.96 | 74,249 |
| Countries by Official Language | 0 | - | 4.95 | 195,040 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,100 |
| Countries in their Native Language | 0 | - | 4.99 | 198,543 |
| Independence from Whom | 0 | - | 4.99 | 211,849 |
| Subdivisions by Country | 0 | - | 4.86 | 50,385 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,518 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,904 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,285 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,869 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,073 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,986 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,527 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,323 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,970 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,593 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,049 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,456 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,817 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,129 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,907 |
| Most Forested European Countries | 0 | - | 4.80 | 75,376 |
