| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,776 |
| North Sea Countries | 0 | - | 4.92 | 86,663 |
| Black Sea Countries | 0 | - | 4.87 | 60,367 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,062 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,150 |
| Seas on the World Map | 0 | - | 4.96 | 134,442 |
| Seas of the World | 0 | - | 5.00 | 154,688 |
| World's Longest Rivers | 0 | - | 4.88 | 121,223 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,129 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,982 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,617 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 95,982 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,419 |
| Countries with Fjords | 0 | - | 4.93 | 100,282 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,335 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,221 |
| Countries With No Rivers | 0 | - | 4.96 | 76,088 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,326 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,061 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,145 |
| Famous Rivers | 0 | - | 4.74 | 104,586 |
| City to River #1 | 0 | - | 4.59 | 35,759 |
| Most Populous River Basins | 0 | - | 4.61 | 39,569 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,960 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,143 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,716 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,174 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,161 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,481 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,838 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,297 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,492 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,721 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,982 |
| Megadiverse Countries | 0 | - | 4.97 | 133,977 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,045 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,920 |
| Rivers by City | 0 | - | 4.38 | 31,651 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,815 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,931 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,354 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,795 |
| Geologic Time Scale | 0 | - | 4.46 | 9,934 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,289 |
| Biggest City by River | 0 | - | 4.41 | 52,711 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,740 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,344 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,443 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,982 |
| Boundary Waters | 0 | - | 4.92 | 88,097 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,865 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,415 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,482 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,935 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,999,273 |
| Landlocked Countries | 0 | - | 4.99 | 414,581 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,233 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,111 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,985 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,212 |
| World Capitals Quiz | 0 | - | 5.00 | 5,038,280 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,996 |
| Himalayan Countries | 0 | - | 4.95 | 135,698 |
| Andean Countries | 0 | - | 4.94 | 83,026 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,374 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,435 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,076 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,735 |
| Danube Countries | 0 | - | 4.97 | 71,180 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,899 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,637 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,703 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,607 |
| European Landlocked Countries | 0 | - | 4.99 | 145,876 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,363 |
| Countries with the Most Species | 0 | - | 4.99 | 95,299 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,531 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,235 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,404 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,015 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,653 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,023 |
| Countries in the Alps | 0 | - | 4.86 | 116,983 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,682 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,454 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,107 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,509 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,297 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,093 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,697 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,838 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,595 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,151 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,230 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,099 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,536 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,827 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,829 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,290 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,735 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,311 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,938 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,837 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,994 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,683 |
| Largest Countries By Category | 0 | - | 4.97 | 156,908 |
| Countries by Countries | 0 | - | 4.96 | 62,359 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,549 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,999 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,357 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,044 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,210 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,857 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,834 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,811 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,520 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,626 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,267 |
| Rivers on Borders | 0 | - | 4.02 | 22,644 |
| Rivers A-Z | 0 | - | 4.35 | 32,706 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,700 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,699 |
| Longest International Borders | 0 | - | 4.99 | 263,975 |
| Countries with Three Borders | 0 | - | 4.96 | 36,251 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,652 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,747 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 36,894 |
| Demonym of Every Country | 0 | - | 4.91 | 58,731 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,166 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,573,322 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,483 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,328 |
| Island Countries | 0 | - | 4.99 | 707,999 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,061 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,784 |
| Northernmost Countries | 0 | - | 4.99 | 358,260 |
| Countries of South America | 0 | - | 5.00 | 916,571 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,608 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,747 |
| "Land" Countries | 0 | - | 4.98 | 333,912 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,959 |
| All Country Flags of the World | 0 | - | 5.00 | 3,611,437 |
| Top World Languages | 0 | - | 4.92 | 814,443 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,196 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,627 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,721 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,054 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,697 |
| Countries with Megacities | 0 | - | 4.99 | 247,743 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,547 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,236 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,951 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,178 |
| Biggest Cities in the World | 0 | - | 4.91 | 791,728 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,010 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,209 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,825 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,783 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,914 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,744 |
| Countries by Capital City | 0 | - | 5.00 | 66,939 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,482 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 114,026 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,853 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,507 |
| Moved Capital Cities | 0 | - | 4.96 | 73,707 |
| Countries by Official Language | 0 | - | 4.95 | 192,974 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,426 |
| Countries in their Native Language | 0 | - | 4.99 | 196,837 |
| Independence from Whom | 0 | - | 4.99 | 209,946 |
| Subdivisions by Country | 0 | - | 4.86 | 50,113 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,929 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,006 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,967 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,481 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,886 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,784 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,068 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,212 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,229 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,263 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,767 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,763 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,464 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,567 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,554 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,747 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,076 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,878 |
| World Map Quiz | 0 | - | 4.81 | 63,680 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,234 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,438 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,256 |
| Countries by Founding Story | 0 | - | 4.95 | 76,635 |
| Countries by Road Signs | 0 | - | 4.98 | 53,210 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,603 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,375 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,118 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,096 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,016 |
