| World's Longest Rivers | 0 | - | 4.88 | 110,206 |
| Countries With No Rivers | 0 | - | 4.96 | 69,733 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 78,411 |
| Rivers of Europe Quiz | 0 | - | 4.90 | 48,528 |
| Tectonic Plates Map Quiz | 0 | - | 4.98 | 57,024 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 391,751 |
| Countries That Touch the Baltic Sea | 0 | - | 4.99 | 112,464 |
| North Sea Countries | 0 | - | 4.92 | 80,667 |
| Black Sea Countries | 0 | - | 4.88 | 57,519 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 61,542 |
| Caspian Sea Countries | 0 | - | 4.92 | 59,122 |
| Countries with the Shortest Coastlines | 0 | - | 4.81 | 54,700 |
| Seas on the World Map | 0 | - | 4.97 | 122,640 |
| Seas of the World | 0 | - | 5.00 | 129,527 |
| Famous Rivers | 0 | - | 4.75 | 99,124 |
| Most Populous River Basins | 0 | - | 4.66 | 37,709 |
| Rivers that Flow through the Most Countries | 0 | - | 4.52 | 37,651 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,154 |
| Countries with Fjords | 0 | - | 4.92 | 78,955 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.98 | 106,017 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 68,645 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 46,951 |
| Largest Lakes in the United States on a Map | 0 | - | 4.89 | 21,856 |
| American Countries With No Atlantic Coastline | 0 | - | 4.90 | 73,616 |
| Biggest City by River | 0 | - | 4.42 | 51,044 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 18,908 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 31,208 |
| City to River #1 | 0 | - | 4.53 | 24,750 |
| City to River #2 - Difficult | 0 | - | 4.51 | 14,176 |
| Largest Rivers by Discharge | 0 | - | 4.51 | 14,902 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 140,249 |
| Biggest Lakes in the World | 0 | - | 4.66 | 83,848 |
| Great Lakes Quiz | 0 | - | 4.76 | 46,589 |
| Cities on a Map of the Great Lakes | 0 | - | 4.42 | 41,332 |
| Megadiverse Countries | 0 | - | 4.96 | 126,165 |
| Rivers by City Quiz | 0 | - | 4.35 | 21,801 |
| Gulfs and Bays on the World Map | 0 | - | 4.58 | 27,197 |
| Famous Lakes Quiz | 0 | - | 4.49 | 22,936 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 34,989 |
| Landforms Quiz | 0 | - | 4.34 | 74,715 |
| Geologic Time Scale | 0 | - | 4.46 | 9,061 |
| Rivers on Borders | 0 | - | 4.06 | 21,949 |
| Seas that Touch the Most Countries | 0 | - | 4.72 | 90,437 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 69,939 |
| Atlantic Ocean General Knowledge | 0 | - | 4.71 | 20,043 |
| Indian Ocean General Knowledge | 0 | - | 4.51 | 21,196 |
| Bodies of Water by Cities | 0 | - | 4.79 | 26,834 |
| Landforms by Description Quiz | 0 | - | 4.38 | 25,574 |
| Capital Cities by Body of Water | 0 | - | 4.87 | 53,488 |
| Boundary Waters | 0 | - | 4.93 | 81,569 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 75,758 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,374,490 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 329,807 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.83 | 30,567 |
| World Capitals Quiz | 0 | - | 5.00 | 4,536,471 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,124,373 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,193,783 |
| World Geography on a Map #1 | 0 | - | 4.93 | 67,858 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 84,870 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 138,620 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.95 | 110,668 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,396,217 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,047 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,172 |
| Members of the Arab League | 0 | - | 4.85 | 64,551 |
| Island Countries Quiz | 0 | - | 4.99 | 664,826 |
| Sahara Desert Countries | 0 | - | 4.97 | 128,886 |
| Himalayan Countries | 0 | - | 4.95 | 106,822 |
| Andean Countries | 0 | - | 4.91 | 59,413 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,474 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,247 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,610 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,529 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,829 |
| Danube Countries | 0 | - | 4.96 | 56,978 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,999 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,106 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,030 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,938 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,215 |
| European Landlocked Countries | 0 | - | 4.99 | 136,431 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,346 |
| Countries with the Most Species | 0 | - | 4.99 | 89,698 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,852 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,879 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,170 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,700 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,657 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,933 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,541 |
| Countries in the Alps | 0 | - | 4.84 | 103,300 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,919 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,367 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,954 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,009 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,480 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,982 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,133 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,491 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,524 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,076 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,833 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,809 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,862 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,190 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,348 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,914 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,386 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,667 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,733 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,416 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,132 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,574 |
| Largest Countries By Category | 0 | - | 4.97 | 145,738 |
| Countries by Countries | 0 | - | 4.96 | 55,142 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,405 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,973 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 44,921 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,950 |
| Biggest Countries by Area | 0 | - | 5.00 | 940,391 |
| Northernmost Countries | 0 | - | 4.99 | 329,321 |
| Countries of South America | 0 | - | 5.00 | 802,412 |
| Countries of Oceania | 0 | - | 5.00 | 904,272 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,593,006 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 76,588 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 135,331 |
| Western Europe Map Quiz | 0 | - | 4.86 | 89,369 |
| Top World Languages | 0 | - | 4.92 | 716,150 |
| Tourist Attraction by Negative Review | 0 | - | 4.91 | 60,148 |
| Who Controls It? #1 | 0 | - | 4.84 | 45,692 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 182,276 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 111,517 |
| Longest International Borders | 0 | - | 4.99 | 235,299 |
| Countries with Three Borders | 0 | - | 4.96 | 31,795 |
| Country Connect by Northernmost Point | 0 | - | 4.97 | 36,404 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 40,774 |
| Demonym of Every Country | 0 | - | 4.90 | 50,225 |
| Analogies of Countries #1 | 0 | - | 4.88 | 62,407 |
| Five Letter Geography #4 | 0 | - | 4.83 | 67,268 |
| Name a Valid Answer - Geography | 0 | - | 4.92 | 78,231 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,624 |
| Countries with Megacities | 0 | - | 4.99 | 199,809 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,411 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,004 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 97,006 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,974 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,602 |
| Global Cities on a World Map | 0 | - | 4.92 | 92,063 |
| Northernmost Capital Cities | 0 | - | 4.98 | 95,074 |
| Most Remote Capital Cities | 0 | - | 4.90 | 44,302 |
| Capital Cities: Ports and Saints | 0 | - | 4.94 | 35,044 |
| Capitals with the Shortest Names | 0 | - | 4.96 | 92,121 |
| Same Letter Country and Capital | 0 | - | 4.99 | 128,809 |
| Countries by Capital City | 0 | - | 4.99 | 50,475 |
| Capital Cities Based on First Two Letters | 0 | - | 4.84 | 66,563 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 105,671 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 73,726 |
| Moved Capital Cities | 0 | - | 4.96 | 67,487 |
| Countries by Official Language | 0 | - | 4.96 | 174,173 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,261 |
| Countries in their Native Language | 0 | - | 4.98 | 179,398 |
| Independence from Whom | 0 | - | 4.99 | 187,569 |
| Subdivisions by Country | 0 | - | 4.82 | 46,694 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,599 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,503 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,136 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,635 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,356 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,508 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,812 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,680 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,392 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,674 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,478 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,949 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,583 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,147 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,022 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,644 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,403 |
| World Map Quiz | 0 | - | 4.91 | 50,452 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,099 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,161 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,484 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,901 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,131 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,767 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,055 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,432 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,495 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,554 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,054 |
| Widest Countries East to West | 0 | - | 4.93 | 120,007 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,994 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,817 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,994 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,146 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,013 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,746 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,628 |
