| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,228 |
| North Sea Countries | 0 | - | 4.92 | 87,792 |
| Black Sea Countries | 0 | - | 4.87 | 60,807 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,665 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,757 |
| Seas on the World Map | 0 | - | 4.96 | 136,131 |
| Seas of the World | 0 | - | 5.00 | 158,885 |
| World's Longest Rivers | 0 | - | 4.89 | 137,807 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 165,919 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,427 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 82,260 |
| Seas that Touch the Most Countries | 0 | - | 4.64 | 97,182 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,251 |
| Countries with Fjords | 0 | - | 4.94 | 101,610 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,952 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,760 |
| Countries With No Rivers | 0 | - | 4.96 | 77,261 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 63,155 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,432 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,994 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,708 |
| Famous Rivers | 0 | - | 4.75 | 105,317 |
| City to River #1 | 0 | - | 4.59 | 35,920 |
| Most Populous River Basins | 0 | - | 4.55 | 39,837 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,467 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,518 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 57,007 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,325 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,297 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,743 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 116,113 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 75,082 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,932 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,199 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,905 |
| Megadiverse Countries | 0 | - | 4.96 | 149,329 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,444 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,087 |
| Rivers by City | 0 | - | 4.38 | 31,785 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,273 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,102 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,701 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,320 |
| Geologic Time Scale | 0 | - | 4.41 | 10,083 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,475 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,860 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,773 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,039 |
| Biggest City by River | 0 | - | 4.38 | 52,984 |
| Boundary Waters | 0 | - | 4.92 | 88,846 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,472 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,854 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,582 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,075 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,978,828 |
| Landlocked Countries | 0 | - | 4.99 | 427,358 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 592,189 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,997 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,528 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,179 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,200 |
| World Capitals Quiz | 0 | - | 5.00 | 5,114,608 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,972 |
| Himalayan Countries | 0 | - | 4.93 | 140,870 |
| Andean Countries | 0 | - | 4.94 | 85,826 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,939 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,518 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,482 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,706 |
| Danube Countries | 0 | - | 4.97 | 72,566 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,812 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,985 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,466 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,942 |
| European Landlocked Countries | 0 | - | 4.99 | 147,780 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,555 |
| Countries with the Most Species | 0 | - | 4.99 | 103,655 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,655 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,959 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,932 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,685 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,143 |
| Countries in the Alps | 0 | - | 4.87 | 118,999 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,035 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,163 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,068 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,188 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,141 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,400 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,611 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,003 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,518 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,322 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,960 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,834 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,682 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,935 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,033 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,170 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,746 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,541 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,854 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,376 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,528 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,623 |
| Largest Countries By Category | 0 | - | 4.97 | 159,112 |
| Countries by Countries | 0 | - | 4.97 | 63,818 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,467 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,708 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,480 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,566 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,240 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,278 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,591 |
| Western Europe Map Quiz | 0 | - | 4.86 | 94,029 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,893 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,659 |
| Rivers on Borders | 0 | - | 4.02 | 22,754 |
| Rivers A-Z | 0 | - | 4.35 | 32,875 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,440 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,668 |
| Longest International Borders | 0 | - | 4.99 | 266,017 |
| Countries with Three Borders | 0 | - | 4.96 | 36,837 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,430 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,576 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.86 | 37,214 |
| Demonym of Every Country | 0 | - | 4.90 | 61,652 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,721 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,602,522 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,077 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,439 |
| Island Countries | 0 | - | 4.99 | 713,048 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,458 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,304 |
| Northernmost Countries | 0 | - | 4.99 | 364,653 |
| Countries of South America | 0 | - | 5.00 | 934,457 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,716 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,443 |
| "Land" Countries | 0 | - | 4.98 | 339,055 |
| Europe Map Quiz | 0 | - | 5.00 | 4,793,592 |
| All Country Flags of the World | 0 | - | 5.00 | 3,725,636 |
| Top World Languages | 0 | - | 4.92 | 831,416 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,781 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 105,156 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,222 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,029 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,534 |
| Countries with Megacities | 0 | - | 4.99 | 267,936 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,188 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,352 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,510 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,458 |
| Biggest Cities in the World | 0 | - | 4.91 | 807,124 |
| Global Cities on a World Map | 0 | - | 4.93 | 137,534 |
| Northernmost Capital Cities | 0 | - | 4.98 | 111,573 |
| Most Remote Capital Cities | 0 | - | 4.92 | 54,089 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 46,360 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 110,457 |
| Same Letter Country and Capital | 0 | - | 4.99 | 158,407 |
| Countries by Capital City | 0 | - | 5.00 | 69,650 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 78,179 |
| Capitals of the Largest Countries by Area | 0 | - | 4.96 | 115,368 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,496 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,973 |
| Moved Capital Cities | 0 | - | 4.96 | 74,742 |
| World Capitals with a Unique First Letter | 0 | - | 4.83 | 75,869 |
| Countries by Official Language | 0 | - | 4.95 | 196,247 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,981 |
| Countries in their Native Language | 0 | - | 4.99 | 199,975 |
| Independence from Whom | 0 | - | 4.99 | 213,435 |
| Subdivisions by Country | 0 | - | 4.87 | 50,673 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,686 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,153 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,585 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,819 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,263 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,488 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,928 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,300 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,634 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,176 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,810 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,499 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,514 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,225 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,649 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,983 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,775 |
| World Map Quiz | 0 | - | 4.81 | 65,935 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,961 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,827 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,745 |
| Countries by Founding Story | 0 | - | 4.95 | 77,920 |
| Countries by Road Signs | 0 | - | 4.98 | 54,456 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,546 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,247 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,720 |
