| World's Longest Rivers | 0 | - | 4.87 | 121,007 |
| Countries With No Rivers | 0 | - | 4.96 | 76,008 |
| Name a Valid Country on Each River | 0 | - | 4.96 | 61,209 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 86,820 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 55,573 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 80,417 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 115,733 |
| North Sea Countries | 0 | - | 4.92 | 86,584 |
| Black Sea Countries | 0 | - | 4.87 | 60,324 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,004 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,091 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 66,940 |
| Seas on the World Map | 0 | - | 4.96 | 133,763 |
| Seas of the World | 0 | - | 5.00 | 154,219 |
| Famous Rivers | 0 | - | 4.74 | 104,490 |
| City to River #1 | 0 | - | 4.59 | 35,743 |
| Most Populous River Basins | 0 | - | 4.61 | 39,536 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,103 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,353 |
| Countries with Fjords | 0 | - | 4.93 | 100,177 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 114,662 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,205 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,263 |
| Layers of the Earth and Atmosphere | 0 | - | 4.97 | 50,162 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,670 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 91,867 |
| Biggest City by River | 0 | - | 4.41 | 52,689 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 22,737 |
| Rivers by City | 0 | - | 4.38 | 31,626 |
| City to River #2 - Difficult | 0 | - | 4.63 | 25,761 |
| Largest Rivers by Discharge | 0 | - | 4.53 | 15,918 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 161,690 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,160 |
| Biggest Lakes in the World | 0 | - | 4.62 | 88,976 |
| Great Lakes Quiz | 0 | - | 4.78 | 50,095 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,092 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,420 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,303 |
| Megadiverse Countries | 0 | - | 4.97 | 133,858 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 29,982 |
| Famous Lakes Quiz | 0 | - | 4.52 | 23,909 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,329 |
| Geologic Time Scale | 0 | - | 4.46 | 9,916 |
| Rivers on Borders | 0 | - | 4.02 | 22,634 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 95,909 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,730 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,149 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,140 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,446 |
| Landforms by Description Quiz | 0 | - | 4.33 | 25,978 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,275 |
| Boundary Waters | 0 | - | 4.92 | 88,023 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,794 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,224 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,212 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,803 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,884,298 |
| Landlocked Countries | 0 | - | 4.99 | 413,209 |
| World Capitals Quiz | 0 | - | 5.00 | 5,028,598 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,914 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,129 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,953 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,533 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,888 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,399 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,570,087 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,986 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,436 |
| Island Countries | 0 | - | 4.99 | 707,427 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,397 |
| Himalayan Countries | 0 | - | 4.95 | 135,178 |
| Andean Countries | 0 | - | 4.94 | 82,741 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,156 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,091 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,824 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,526 |
| Danube Countries | 0 | - | 4.97 | 71,036 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,701 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,494 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,378 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,298 |
| European Landlocked Countries | 0 | - | 4.99 | 145,707 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,125 |
| Countries with the Most Species | 0 | - | 4.99 | 95,220 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,273 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,190 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,352 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,934 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,545 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,908 |
| Countries in the Alps | 0 | - | 4.87 | 116,757 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,516 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,167 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,979 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,377 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,103 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,963 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,517 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,721 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,967 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,013 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,016 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,406 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,706 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,715 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,970 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,599 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,227 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,726 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,035 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,493 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,570 |
| Largest Countries By Category | 0 | - | 4.97 | 156,683 |
| Countries by Countries | 0 | - | 4.96 | 62,216 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,310 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,949 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,311 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,717 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,900 |
| Northernmost Countries | 0 | - | 4.99 | 357,481 |
| Countries of South America | 0 | - | 5.00 | 914,018 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,440 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,702 |
| "Land" Countries | 0 | - | 4.98 | 333,522 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.90 | 114,700 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,667 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,472 |
| Top World Languages | 0 | - | 4.92 | 812,551 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,510 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,222 |
| Rivers A-Z | 0 | - | 4.35 | 32,674 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,284 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,589 |
| Longest International Borders | 0 | - | 4.99 | 263,463 |
| Countries with Three Borders | 0 | - | 4.96 | 36,161 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,583 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,633 |
| Demonym of Every Country | 0 | - | 4.91 | 58,607 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,148 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 103,432 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,973 |
| Countries with Megacities | 0 | - | 4.99 | 246,465 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,889 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,785 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,350 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,739 |
| Global Cities on a World Map | 0 | - | 4.93 | 134,674 |
| Northernmost Capital Cities | 0 | - | 4.98 | 108,874 |
| Most Remote Capital Cities | 0 | - | 4.92 | 52,609 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 44,558 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 107,536 |
| Same Letter Country and Capital | 0 | - | 4.99 | 155,322 |
| Countries by Capital City | 0 | - | 5.00 | 66,547 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 76,277 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 113,857 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 83,373 |
| Moved Capital Cities | 0 | - | 4.96 | 73,548 |
| Countries by Official Language | 0 | - | 4.95 | 192,678 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,001 |
| Countries in their Native Language | 0 | - | 4.99 | 196,546 |
| Independence from Whom | 0 | - | 4.99 | 209,578 |
| Subdivisions by Country | 0 | - | 4.86 | 50,045 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,661 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,720 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,899 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,399 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,589 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,966 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,767 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,109 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,198 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,729 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,475 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,390 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,462 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,482 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,641 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,000 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,142 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,445 |
| World Map Quiz | 0 | - | 4.81 | 63,433 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,435 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,276 |
| Countries by Founding Story | 0 | - | 4.95 | 76,483 |
| Countries by Road Signs | 0 | - | 4.98 | 53,055 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,247 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,927 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,896 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,608 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,814 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,019 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,224 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,909 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,296 |
| Widest Countries East to West | 0 | - | 4.92 | 128,561 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,206 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,153 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,541 |
