| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,890 |
| North Sea Countries | 0 | - | 4.92 | 86,856 |
| Black Sea Countries | 0 | - | 4.87 | 60,484 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,191 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,299 |
| Seas on the World Map | 0 | - | 4.96 | 134,829 |
| Seas of the World | 0 | - | 5.00 | 155,695 |
| World's Longest Rivers | 0 | - | 4.88 | 121,889 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,897 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,069 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,926 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,408 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,604 |
| Countries with Fjords | 0 | - | 4.93 | 100,550 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,498 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,323 |
| Countries With No Rivers | 0 | - | 4.96 | 76,262 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,575 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,182 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,254 |
| Famous Rivers | 0 | - | 4.74 | 104,726 |
| City to River #1 | 0 | - | 4.59 | 35,794 |
| Most Populous River Basins | 0 | - | 4.55 | 39,615 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,242 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,225 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,930 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,200 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,186 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,538 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,084 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,459 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,606 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,805 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,176 |
| Megadiverse Countries | 0 | - | 4.96 | 134,594 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,132 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,968 |
| Rivers by City | 0 | - | 4.38 | 31,675 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,919 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,966 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,420 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,922 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,321 |
| Geologic Time Scale | 0 | - | 4.46 | 9,983 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,546 |
| Biggest City by River | 0 | - | 4.41 | 52,764 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,775 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,431 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,015 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,998 |
| Boundary Waters | 0 | - | 4.92 | 88,275 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,001 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,704 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,907 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,182 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,094 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,204,830 |
| Landlocked Countries | 0 | - | 4.99 | 417,182 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 563,335 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,417 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,426 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,369 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,635 |
| World Capitals Quiz | 0 | - | 5.00 | 5,053,664 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,183 |
| Himalayan Countries | 0 | - | 4.95 | 136,737 |
| Andean Countries | 0 | - | 4.95 | 83,589 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,850 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,138 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,510 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,115 |
| Danube Countries | 0 | - | 4.97 | 71,479 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,292 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,891 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,282 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,272 |
| European Landlocked Countries | 0 | - | 4.99 | 146,182 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,856 |
| Countries with the Most Species | 0 | - | 4.99 | 102,326 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,989 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,352 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,533 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,202 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,846 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,227 |
| Countries in the Alps | 0 | - | 4.86 | 117,415 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,954 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,024 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,295 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,795 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,892 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,313 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,060 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,034 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,854 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,389 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,390 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,230 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,780 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,040 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,050 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,826 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,933 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,462 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,296 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,306 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,726 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,869 |
| Largest Countries By Category | 0 | - | 4.97 | 157,349 |
| Countries by Countries | 0 | - | 4.96 | 62,654 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,943 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,100 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,416 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,923 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,451 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,137 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,744,584 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,170 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,673 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,027 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,340 |
| All 10m+ First-Level Country Subdivisions | 0 | - | 4.97 | 34,635 |
| Rivers on Borders | 0 | - | 4.02 | 22,665 |
| Rivers A-Z | 0 | - | 4.35 | 32,741 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,546 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,935 |
| Longest International Borders | 0 | - | 4.99 | 264,386 |
| Countries with Three Borders | 0 | - | 4.96 | 36,374 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,817 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,904 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 36,968 |
| Demonym of Every Country | 0 | - | 4.91 | 58,980 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,443 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,579,133 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,052 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,156 |
| Island Countries | 0 | - | 4.99 | 709,056 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,792 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,991 |
| Northernmost Countries | 0 | - | 4.99 | 359,664 |
| Countries of South America | 0 | - | 5.00 | 920,423 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,951 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,547 |
| "Land" Countries | 0 | - | 4.98 | 335,057 |
| Europe Map Quiz | 0 | - | 5.00 | 4,748,450 |
| All Country Flags of the World | 0 | - | 5.00 | 3,634,678 |
| Top World Languages | 0 | - | 4.92 | 818,101 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,282 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,946 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,751 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,060 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,461 |
| Countries with Megacities | 0 | - | 4.99 | 249,364 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,313 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,649 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,636 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,623 |
| Biggest Cities in the World | 0 | - | 4.91 | 794,681 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,555 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,682 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,094 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,124 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,576 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,277 |
| Countries by Capital City | 0 | - | 5.00 | 67,600 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,809 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,306 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,960 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,761 |
| Moved Capital Cities | 0 | - | 4.96 | 73,926 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,228 |
| Countries by Official Language | 0 | - | 4.95 | 194,200 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,005 |
| Countries in their Native Language | 0 | - | 4.99 | 197,805 |
| Independence from Whom | 0 | - | 4.99 | 210,944 |
| Subdivisions by Country | 0 | - | 4.86 | 50,219 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,433 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,970 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,103 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,657 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,960 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,508 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,266 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,684 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,588 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,399 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,818 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,448 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,608 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,708 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,680 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,888 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,245 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,721 |
| World Map Quiz | 0 | - | 4.81 | 64,203 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,670 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,760 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 63,577 |
| Countries by Sports in 60 Seconds | 0 | - | 4.91 | 143,353 |
| Countries by Founding Story | 0 | - | 4.95 | 76,926 |
