| World's Longest Rivers | 0 | - | 4.87 | 120,999 |
| Countries With No Rivers | 0 | - | 4.96 | 76,000 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,197 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,809 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,570 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,394 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,731 |
| North Sea Countries | 0 | - | 4.92 | 86,578 |
| Black Sea Countries | 0 | - | 4.87 | 60,317 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 64,998 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,088 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,938 |
| Seas on the World Map | 0 | - | 4.96 | 133,754 |
| Seas of the World | 0 | - | 5.00 | 154,198 |
| Famous Rivers | 0 | - | 4.74 | 104,486 |
| City to River #1 | 0 | - | 4.59 | 35,741 |
| Most Populous River Basins | 0 | - | 4.61 | 39,535 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,100 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,349 |
| Countries with Fjords | 0 | - | 4.93 | 100,172 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,658 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,198 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,255 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,160 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,665 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,856 |
| Biggest City by River | 0 | - | 4.41 | 52,688 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,734 |
| Rivers by City | 0 | - | 4.38 | 31,625 |
| City to River #2 - Difficult | 0 | - | 4.63 | 25,755 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,917 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 161,675 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,153 |
| Biggest Lakes in the World | 0 | - | 4.62 | 88,970 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,091 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,080 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,418 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,299 |
| Megadiverse Countries | 0 | - | 4.97 | 133,851 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 29,979 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,909 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,326 |
| Geologic Time Scale | 0 | - | 4.46 | 9,913 |
| Rivers on Borders | 0 | - | 4.02 | 22,633 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 95,903 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,729 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,148 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,140 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,445 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,978 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,270 |
| Boundary Waters | 0 | - | 4.92 | 88,018 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,793 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,217 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,196 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,794 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,878,056 |
| Landlocked Countries | 0 | - | 4.99 | 413,146 |
| World Capitals Quiz | 0 | - | 5.00 | 5,028,112 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,355 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,126 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,945 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,515 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,881 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,335 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,569,877 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,951 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,298 |
| Island Countries | 0 | - | 4.99 | 707,386 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,381 |
| Himalayan Countries | 0 | - | 4.95 | 135,157 |
| Andean Countries | 0 | - | 4.94 | 82,729 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,146 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,078 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,818 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,512 |
| Danube Countries | 0 | - | 4.97 | 71,031 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,693 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,485 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,360 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,279 |
| European Landlocked Countries | 0 | - | 4.99 | 145,700 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,108 |
| Countries with the Most Species | 0 | - | 4.99 | 95,215 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,259 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,187 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,351 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,927 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,540 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,897 |
| Countries in the Alps | 0 | - | 4.87 | 116,742 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,512 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,155 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,969 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,364 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,097 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,958 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,509 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,711 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,866 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,008 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,013 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,396 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,702 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,708 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,960 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,593 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,218 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,720 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,993 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,474 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,565 |
| Largest Countries By Category | 0 | - | 4.97 | 156,674 |
| Countries by Countries | 0 | - | 4.96 | 62,208 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,294 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,946 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,310 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,706 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,796 |
| Northernmost Countries | 0 | - | 4.99 | 357,434 |
| Countries of South America | 0 | - | 5.00 | 913,905 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,276 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,409 |
| "Land" Countries | 0 | - | 4.98 | 333,506 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,692 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,660 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,469 |
| Top World Languages | 0 | - | 4.92 | 812,431 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,503 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,222 |
| Rivers A-Z | 0 | - | 4.35 | 32,672 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,254 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,579 |
| Longest International Borders | 0 | - | 4.99 | 263,436 |
| Countries with Three Borders | 0 | - | 4.96 | 36,154 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,577 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,628 |
| Demonym of Every Country | 0 | - | 4.91 | 58,597 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,142 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,424 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,955 |
| Countries with Megacities | 0 | - | 4.99 | 246,404 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,870 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,775 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,325 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,729 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,663 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,864 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,602 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,553 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,519 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,311 |
| Countries by Capital City | 0 | - | 5.00 | 66,530 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,264 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,850 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,362 |
| Moved Capital Cities | 0 | - | 4.96 | 73,544 |
| Countries by Official Language | 0 | - | 4.95 | 192,662 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,977 |
| Countries in their Native Language | 0 | - | 4.99 | 196,527 |
| Independence from Whom | 0 | - | 4.99 | 209,555 |
| Subdivisions by Country | 0 | - | 4.86 | 50,041 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,640 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,702 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,897 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,395 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,846 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,583 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,963 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,639 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,097 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,195 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,727 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,455 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,384 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,457 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,474 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,636 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,997 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,868 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,419 |
| World Map Quiz | 0 | - | 4.81 | 63,417 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,383 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,265 |
| Countries by Founding Story | 0 | - | 4.95 | 76,476 |
| Countries by Road Signs | 0 | - | 4.98 | 53,041 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,225 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,921 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,883 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,588 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,807 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,005 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,211 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,906 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,288 |
| Widest Countries East to West | 0 | - | 4.92 | 128,554 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,201 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,140 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,537 |
