| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,806 |
| North Sea Countries | 0 | - | 4.92 | 86,736 |
| Black Sea Countries | 0 | - | 4.87 | 60,399 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,115 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,198 |
| Seas on the World Map | 0 | - | 4.96 | 134,640 |
| Seas of the World | 0 | - | 5.00 | 155,218 |
| World's Longest Rivers | 0 | - | 4.88 | 121,738 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 162,563 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,789 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,013 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,470 |
| Countries with Fjords | 0 | - | 4.93 | 100,403 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,412 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,288 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,136 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,203 |
| Famous Rivers | 0 | - | 4.74 | 104,664 |
| City to River #1 | 0 | - | 4.59 | 35,775 |
| Most Populous River Basins | 0 | - | 4.55 | 39,591 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,188 |
| Countries With No Rivers | 0 | - | 4.96 | 76,169 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,447 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,192 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,172 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,511 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,107 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,818 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,555 |
| Megadiverse Countries | 0 | - | 4.96 | 134,496 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,968 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,386 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,754 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,088 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,099 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,944 |
| Rivers by City | 0 | - | 4.38 | 31,665 |
| City to River #2 - Difficult | 0 | - | 4.64 | 25,874 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,956 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,374 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,858 |
| Geologic Time Scale | 0 | - | 4.46 | 9,960 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,432 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,755 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,765 |
| Biggest City by River | 0 | - | 4.41 | 52,739 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,391 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,991 |
| Boundary Waters | 0 | - | 4.92 | 88,177 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,926 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,568 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,703 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,056 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,110,045 |
| Landlocked Countries | 0 | - | 4.99 | 415,964 |
| World Capitals Quiz | 0 | - | 5.00 | 5,046,421 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,735,714 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,315 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,261 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,190 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,448 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,353 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,576,274 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,509 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,187 |
| Island Countries | 0 | - | 4.99 | 708,576 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,578 |
| Himalayan Countries | 0 | - | 4.95 | 136,206 |
| Andean Countries | 0 | - | 4.95 | 83,296 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,589 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,798 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,287 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,910 |
| Danube Countries | 0 | - | 4.97 | 71,328 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,099 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,782 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,999 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,960 |
| European Landlocked Countries | 0 | - | 4.99 | 146,037 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,649 |
| Countries with the Most Species | 0 | - | 4.99 | 96,247 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,786 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,293 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,470 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,108 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,754 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,128 |
| Countries in the Alps | 0 | - | 4.86 | 117,241 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,828 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,736 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,205 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,655 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,491 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,199 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,893 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,946 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,741 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,274 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,318 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,176 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,669 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,931 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,941 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,590 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,843 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,379 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,119 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,631 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,401 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,777 |
| Largest Countries By Category | 0 | - | 4.97 | 157,161 |
| Countries by Countries | 0 | - | 4.96 | 62,520 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,777 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,059 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,395 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,349 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,029 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,547 |
| Northernmost Countries | 0 | - | 4.99 | 359,032 |
| Countries of South America | 0 | - | 5.00 | 918,733 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,536 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,405 |
| "Land" Countries | 0 | - | 4.98 | 334,267 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,964 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,602 |
| Top World Languages | 0 | - | 4.92 | 816,346 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,781 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,308 |
| Rivers on Borders | 0 | - | 4.02 | 22,657 |
| Rivers A-Z | 0 | - | 4.35 | 32,730 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,062 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,807 |
| Longest International Borders | 0 | - | 4.99 | 264,222 |
| Countries with Three Borders | 0 | - | 4.96 | 36,315 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,741 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,830 |
| Demonym of Every Country | 0 | - | 4.91 | 58,855 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,250 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,792 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,100 |
| Countries with Megacities | 0 | - | 4.99 | 248,594 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,974 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,453 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,346 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,406 |
| Global Cities on a World Map | 0 | - | 4.93 | 135,341 |
| Northernmost Capital Cities | 0 | - | 4.98 | 109,458 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,979 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,953 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 108,162 |
| Same Letter Country and Capital | 0 | - | 4.99 | 156,027 |
| Countries by Capital City | 0 | - | 5.00 | 67,295 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,639 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,175 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,624 |
| Moved Capital Cities | 0 | - | 4.96 | 73,822 |
| Countries by Official Language | 0 | - | 4.95 | 193,766 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,259 |
| Countries in their Native Language | 0 | - | 4.99 | 197,420 |
| Independence from Whom | 0 | - | 4.99 | 210,384 |
| Subdivisions by Country | 0 | - | 4.86 | 50,169 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,209 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,633 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,052 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,588 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,931 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,016 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,174 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,466 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,502 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,328 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,061 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,554 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,649 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,621 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,825 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,161 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,760 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,332 |
| World Map Quiz | 0 | - | 4.81 | 63,931 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,016 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,646 |
| Countries by Founding Story | 0 | - | 4.95 | 76,809 |
| Countries by Road Signs | 0 | - | 4.98 | 53,336 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,934 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,603 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,317 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,522 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,185 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,383 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,566 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,109 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,588 |
| Widest Countries East to West | 0 | - | 4.92 | 129,089 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,305 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,568 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,700 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,915 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,913 |
