| World's Longest Rivers | 0 | - | 4.90 | 136,904 |
| Countries With No Rivers | 0 | - | 4.96 | 76,870 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,211 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,875 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,519 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,608 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,045 |
| North Sea Countries | 0 | - | 4.92 | 87,444 |
| Black Sea Countries | 0 | - | 4.87 | 60,631 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,415 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,517 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,259 |
| Seas on the World Map | 0 | - | 4.96 | 135,459 |
| Seas of the World | 0 | - | 5.00 | 157,191 |
| Famous Rivers | 0 | - | 4.75 | 105,021 |
| City to River #1 | 0 | - | 4.59 | 35,855 |
| Most Populous River Basins | 0 | - | 4.55 | 39,734 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,373 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,869 |
| Countries with Fjords | 0 | - | 4.94 | 100,976 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,596 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,757 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,721 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,527 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,998 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,523 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,112 |
| Rivers by City | 0 | - | 4.38 | 31,730 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,082 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,026 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 164,109 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,976 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,692 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,437 |
| Biggest City by River | 0 | - | 4.38 | 52,871 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,242 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,753 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,577 |
| Megadiverse Countries | 0 | - | 4.96 | 134,952 |
| Gulfs and Bays on the World Map | 0 | - | 4.61 | 30,282 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,016 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,532 |
| Geologic Time Scale | 0 | - | 4.41 | 10,026 |
| Rivers on Borders | 0 | - | 4.02 | 22,701 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,860 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,814 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,250 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,243 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,641 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,024 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,704 |
| Boundary Waters | 0 | - | 4.92 | 88,515 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,215 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,189 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,591 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,534 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,528,417 |
| Landlocked Countries | 0 | - | 4.99 | 421,293 |
| World Capitals Quiz | 0 | - | 5.00 | 5,079,227 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,580 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,669 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,946 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,306 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,307 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,012 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,588,728 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,317 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,787 |
| Island Countries | 0 | - | 4.99 | 710,779 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,119 |
| Himalayan Countries | 0 | - | 4.95 | 138,413 |
| Andean Countries | 0 | - | 4.93 | 84,430 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,644 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,593 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,276 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,674 |
| Danube Countries | 0 | - | 4.97 | 71,929 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,912 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,343 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,156 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,612 |
| European Landlocked Countries | 0 | - | 4.99 | 147,058 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,506 |
| Countries with the Most Species | 0 | - | 4.99 | 103,167 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,658 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,546 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,689 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,493 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,172 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,584 |
| Countries in the Alps | 0 | - | 4.87 | 118,090 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,605 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,902 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,602 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,528 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,415 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,891 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,577 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,433 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,134 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,780 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,612 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,470 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,153 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,407 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,446 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,727 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,241 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 61,315 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,943 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,579 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,901 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,165 |
| Largest Countries By Category | 0 | - | 4.97 | 158,083 |
| Countries by Countries | 0 | - | 4.96 | 63,116 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,589 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,252 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,540 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,370 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,913 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,601 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,967 |
| Northernmost Countries | 0 | - | 4.99 | 361,650 |
| Countries of South America | 0 | - | 5.00 | 926,289 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,539 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,987 |
| "Land" Countries | 0 | - | 4.98 | 337,120 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,846 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,655 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,830 |
| Top World Languages | 0 | - | 4.92 | 823,341 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,441 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,468 |
| Rivers A-Z | 0 | - | 4.35 | 32,789 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,819 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,245 |
| Longest International Borders | 0 | - | 4.99 | 265,083 |
| Countries with Three Borders | 0 | - | 4.96 | 36,572 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,079 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,176 |
| Demonym of Every Country | 0 | - | 4.91 | 60,483 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,430 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,470 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,719 |
| Countries with Megacities | 0 | - | 4.99 | 264,137 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,564 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,383 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,825 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,438 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,328 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,413 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,487 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,598 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,354 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,173 |
| Countries by Capital City | 0 | - | 5.00 | 68,472 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,267 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,744 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,310 |
| Moved Capital Cities | 0 | - | 4.96 | 74,281 |
| Countries by Official Language | 0 | - | 4.95 | 195,110 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,183 |
| Countries in their Native Language | 0 | - | 4.99 | 198,889 |
| Independence from Whom | 0 | - | 4.99 | 211,926 |
| Subdivisions by Country | 0 | - | 4.86 | 50,397 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,611 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,957 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,307 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,884 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,085 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,022 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,556 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,365 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,990 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,607 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,058 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,538 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,838 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,157 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,925 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,309 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,456 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,924 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,983 |
| World Map Quiz | 0 | - | 4.81 | 64,998 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,907 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,281 |
| Countries by Founding Story | 0 | - | 4.95 | 77,304 |
| Countries by Road Signs | 0 | - | 4.98 | 53,938 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,961 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,195 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,916 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,026 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,817 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,946 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,246 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,401 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,520 |
| Widest Countries East to West | 0 | - | 4.92 | 129,580 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,434 |
