| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,027 |
| North Sea Countries | 0 | - | 4.92 | 87,395 |
| Black Sea Countries | 0 | - | 4.87 | 60,604 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,384 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,482 |
| Seas on the World Map | 0 | - | 4.96 | 135,352 |
| Seas of the World | 0 | - | 5.00 | 156,930 |
| World's Longest Rivers | 0 | - | 4.90 | 136,733 |
| Draw All Country Borders and Borderless Countries | 0 | - | 4.99 | 163,867 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,235 |
| Tectonic Plates Map Quiz | 0 | - | 4.99 | 81,473 |
| Seas that Touch the Most Countries | 0 | - | 4.63 | 96,809 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,830 |
| Countries with Fjords | 0 | - | 4.94 | 100,904 |
| Tectonic Plates on a Map | 0 | - | 4.97 | 35,683 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,496 |
| Countries With No Rivers | 0 | - | 4.96 | 76,819 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,126 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,086 |
| Biggest Lakes in the World | 0 | - | 4.63 | 89,638 |
| Great Lakes Quiz | 0 | - | 4.80 | 50,403 |
| Famous Rivers | 0 | - | 4.75 | 104,970 |
| City to River #1 | 0 | - | 4.59 | 35,848 |
| Most Populous River Basins | 0 | - | 4.55 | 39,716 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,800 |
| Rivers that Flow through the Most Countries | 0 | - | 4.53 | 40,350 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,446 |
| Atlantic Ocean General Knowledge | 0 | - | 4.74 | 21,241 |
| Indian Ocean General Knowledge | 0 | - | 4.52 | 22,236 |
| Bodies of Water by Cities | 0 | - | 4.77 | 28,627 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,524 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,706 |
| Landforms Fill in the Blank | 0 | - | 4.41 | 91,731 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 29,970 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,472 |
| Megadiverse Countries | 0 | - | 4.96 | 134,894 |
| Gulfs and Bays on the World Map | 0 | - | 4.62 | 30,255 |
| Famous Lakes Quiz | 0 | - | 4.52 | 24,006 |
| Rivers by City | 0 | - | 4.38 | 31,718 |
| City to River #2 - Difficult | 0 | - | 4.64 | 26,062 |
| Largest Rivers by Discharge | 0 | - | 4.54 | 16,020 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,516 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,083 |
| Geologic Time Scale | 0 | - | 4.41 | 10,014 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,890 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.26 | 70,799 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,558 |
| Landforms by Description Quiz | 0 | - | 4.33 | 26,018 |
| Biggest City by River | 0 | - | 4.38 | 52,857 |
| Boundary Waters | 0 | - | 4.92 | 88,472 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,171 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,099 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,468 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,470 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,465,896 |
| Landlocked Countries | 0 | - | 4.99 | 420,604 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 572,494 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,612 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,841 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,989 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,191 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,331 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,750 |
| Himalayan Countries | 0 | - | 4.95 | 138,111 |
| Andean Countries | 0 | - | 4.95 | 84,281 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,501 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,355 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,128 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,579 |
| Danube Countries | 0 | - | 4.97 | 71,843 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,806 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,245 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,990 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,438 |
| European Landlocked Countries | 0 | - | 4.99 | 146,978 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,389 |
| Countries with the Most Species | 0 | - | 4.99 | 103,100 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,544 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,508 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,661 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,448 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,118 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,509 |
| Countries in the Alps | 0 | - | 4.87 | 117,966 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,590 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,731 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,549 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,461 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,316 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,836 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,476 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,344 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,080 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,710 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,568 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,421 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,076 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,355 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,369 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,555 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,184 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,694 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,832 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,218 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,691 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,113 |
| Largest Countries By Category | 0 | - | 4.97 | 157,940 |
| Countries by Countries | 0 | - | 4.97 | 63,018 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,474 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,220 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,516 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,100 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,814 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,514 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,020 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,569 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,798 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,362 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,444 |
| Rivers on Borders | 0 | - | 4.02 | 22,694 |
| Rivers A-Z | 0 | - | 4.35 | 32,781 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,612 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,193 |
| Longest International Borders | 0 | - | 4.99 | 264,957 |
| Countries with Three Borders | 0 | - | 4.96 | 36,535 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,015 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,138 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,041 |
| Demonym of Every Country | 0 | - | 4.91 | 60,209 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,367 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,588 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,071 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,278 |
| Island Countries | 0 | - | 4.99 | 710,433 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,921 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,973 |
| Northernmost Countries | 0 | - | 4.99 | 361,265 |
| Countries of South America | 0 | - | 5.00 | 925,178 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,156 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,140 |
| "Land" Countries | 0 | - | 4.98 | 336,528 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,553 |
| All Country Flags of the World | 0 | - | 5.00 | 3,665,436 |
| Top World Languages | 0 | - | 4.92 | 822,335 |
| Analogies of Countries #1 | 0 | - | 4.88 | 68,400 |
| Name a Valid Answer - Geography | 0 | - | 4.95 | 104,367 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,847 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,374 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,484 |
| Countries with Megacities | 0 | - | 4.99 | 263,482 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,327 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,263 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,620 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,298 |
| Biggest Cities in the World | 0 | - | 4.91 | 798,981 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,146 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,257 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,408 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,503 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,235 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,014 |
| Countries by Capital City | 0 | - | 5.00 | 68,290 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,172 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,653 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,462 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,206 |
| Moved Capital Cities | 0 | - | 4.96 | 74,214 |
| World Capitals with a Unique First Letter | 0 | - | 4.82 | 75,559 |
| Countries by Official Language | 0 | - | 4.95 | 194,952 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,970 |
| Countries in their Native Language | 0 | - | 4.99 | 198,469 |
| Independence from Whom | 0 | - | 4.99 | 211,730 |
| Subdivisions by Country | 0 | - | 4.86 | 50,363 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,000 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,814 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,266 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,849 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,923 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,488 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,231 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,942 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,568 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,355 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,798 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,097 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,873 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,254 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,420 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,709 |
| World Map Quiz | 0 | - | 4.81 | 64,883 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,440 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,200 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,949 |
| Countries by Founding Story | 0 | - | 4.95 | 77,231 |
| Countries by Road Signs | 0 | - | 4.98 | 53,840 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,798 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,106 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,835 |
