| Natural Features of Countries #1 | 0 | - | 4.87 | 83,883 |
| Countries with Fjords | 0 | - | 4.94 | 101,006 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,717 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,063 |
| North Sea Countries | 0 | - | 4.92 | 87,464 |
| Black Sea Countries | 0 | - | 4.87 | 60,644 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,435 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,539 |
| Countries With No Rivers | 0 | - | 4.96 | 76,888 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,270 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,619 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,780 |
| African Great Lakes | 0 | - | 4.82 | 66,418 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,457 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,584 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,535 |
| Megadiverse Countries | 0 | - | 4.96 | 134,981 |
| Countries with the Most Forest A-Z | 0 | - | 4.63 | 55,546 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,915 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,803 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,215 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,942 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,267 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,754 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,277 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 29,009 |
| Rivers of the United States | 0 | - | 4.93 | 66,290 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,317 |
| African Physical Geography | 0 | - | 4.51 | 31,730 |
| Asian Physical Geography | 0 | - | 4.61 | 35,557 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,816 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,586 |
| Countries with Glaciers | 0 | - | 4.97 | 105,524 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,650 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,742 |
| Landforms by Country | 0 | - | 4.52 | 51,980 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,358 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,108 |
| Capitals by River | 0 | - | 4.55 | 48,338 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,627 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,204 |
| Geological Extremes | 0 | - | 4.34 | 40,055 |
| European Physical Geography | 0 | - | 4.26 | 33,536 |
| Name the Constellations - With a Map | 0 | - | 4.92 | 36,005 |
| Least Forested Countries in Asia | 0 | - | 4.75 | 64,766 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,788 |
| Biggest City by River | 0 | - | 4.38 | 52,879 |
| Top 10 Solar Power Countries | 0 | - | 4.78 | 60,030 |
| Top 10 Most Forested Countries in Asia | 0 | - | 4.63 | 63,498 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,557,952 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,472 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,020 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,922 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,367 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,253 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,695 |
| South American Physical Geography | 0 | - | 4.58 | 18,365 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,300 |
| Seas of Europe | 0 | - | 4.37 | 84,709 |
| Boundary Waters | 0 | - | 4.92 | 88,547 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,228 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,228 |
| World Capitals Quiz | 0 | - | 5.00 | 5,081,489 |
| Landlocked Countries | 0 | - | 4.99 | 421,658 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,610 |
| Least-Forested Countries | 0 | - | 4.53 | 65,267 |
| Tropical Rainforest Countries | 0 | - | 4.69 | 82,152 |
| Countries with the Most Mangroves | 0 | - | 4.53 | 34,652 |
| Worst Plastic Polluting Countries | 0 | - | 4.51 | 66,606 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,776,473 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,415 |
| Rivers A-Z | 0 | - | 4.35 | 32,793 |
| Sea in the Answers | 0 | - | 4.10 | 49,001 |
| Northernmost Countries Without Glaciers | 0 | - | 4.62 | 36,163 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,692 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,364 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,370 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,307 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,761 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,427 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,999 |
| Island Countries | 0 | - | 4.99 | 710,922 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,294 |
| Himalayan Countries | 0 | - | 4.95 | 138,585 |
| Andean Countries | 0 | - | 4.93 | 84,527 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,715 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,715 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,349 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,741 |
| Danube Countries | 0 | - | 4.97 | 71,968 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,967 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,384 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,234 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,716 |
| European Landlocked Countries | 0 | - | 4.99 | 147,094 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,576 |
| Countries with the Most Species | 0 | - | 4.99 | 103,203 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,707 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,570 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,706 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,519 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,200 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,623 |
| Countries in the Alps | 0 | - | 4.87 | 118,155 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,899 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,982 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,624 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,567 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,461 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,923 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,634 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,462 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,158 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,812 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,634 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,494 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,190 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,438 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,488 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,284 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 63,258 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,016 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,761 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,006 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,194 |
| Largest Countries By Category | 0 | - | 4.97 | 158,157 |
| Countries by Countries | 0 | - | 4.96 | 63,164 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,873 |
| Countries with Wild Lions | 0 | - | 4.77 | 26,398 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,643 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,462 |
| Northernmost Countries | 0 | - | 4.99 | 361,806 |
| Countries with the Highest Percentage of Forest | 0 | - | 4.62 | 37,855 |
| Countries of South America | 0 | - | 5.00 | 926,867 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,314 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,325 |
| "Land" Countries | 0 | - | 4.98 | 337,243 |
| Top 10 Countries with the Most Horses | 0 | - | 4.49 | 69,090 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,841 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,682 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,846 |
| All Country Flags of the World | 0 | - | 5.00 | 3,675,977 |
| Top World Languages | 0 | - | 4.92 | 823,845 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,481 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,484 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,915 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,267 |
| Longest International Borders | 0 | - | 4.99 | 265,148 |
| Countries with Three Borders | 0 | - | 4.96 | 36,592 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,104 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,204 |
| Organs of the Human Body (with map) | 0 | - | 4.10 | 119,480 |
| Demonym of Every Country | 0 | - | 4.91 | 60,607 |
| Where Do Musk Oxen Live? | 0 | - | 4.63 | 15,320 |
| Elements Named for Countries | 0 | - | 4.53 | 24,774 |
| Animal Anatomy Quiz | 0 | - | 4.39 | 59,869 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,444 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,663 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,847 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,797 |
| Countries with Megacities | 0 | - | 4.99 | 264,374 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,661 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,422 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,927 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,490 |
| Biggest Cities in the World | 0 | - | 4.91 | 800,458 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,390 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,473 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,517 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,635 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,436 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,244 |
| Countries by Capital City | 0 | - | 5.00 | 68,567 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,323 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,779 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,952 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,351 |
| Moved Capital Cities | 0 | - | 4.96 | 74,307 |
| Countries by Official Language | 0 | - | 4.95 | 195,199 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,279 |
| Countries in their Native Language | 0 | - | 4.99 | 198,985 |
| Independence from Whom | 0 | - | 4.99 | 212,015 |
| Subdivisions by Country | 0 | - | 4.86 | 50,420 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,673 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,027 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,332 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,215 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,093 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,076 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,578 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,419 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,008 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,630 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,127 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,621 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,856 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,182 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,946 |
| Most Forested European Countries | 0 | - | 4.80 | 75,422 |
