| Countries With No Rivers | 0 | - | 4.96 | 76,881 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,233 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,711 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,608 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,767 |
| African Great Lakes | 0 | - | 4.82 | 66,392 |
| American Countries With No Atlantic Coastline | 0 | - | 4.94 | 92,539 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,880 |
| Countries with Fjords | 0 | - | 4.94 | 100,996 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,455 |
| Rivers and Lakes whose Names are Countries | 0 | - | 4.95 | 45,571 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,572 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,730 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,125 |
| Capitals by River | 0 | - | 4.55 | 48,337 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 115,893 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,212 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.89 | 28,996 |
| Biggest City by River | 0 | - | 4.38 | 52,875 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,058 |
| North Sea Countries | 0 | - | 4.92 | 87,460 |
| Black Sea Countries | 0 | - | 4.87 | 60,638 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,426 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,534 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,266 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,297 |
| Rivers of the United States | 0 | - | 4.93 | 66,280 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,584 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,101 |
| Independence from Whom | 0 | - | 4.99 | 211,982 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,652 |
| Megadiverse Countries | 0 | - | 4.96 | 134,975 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,570 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,401 |
| Countries by Founding Story | 0 | - | 4.95 | 77,327 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 46,818 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,532 |
| Cities by Former Name | 0 | - | 4.83 | 91,660 |
| Recently Independent Countries | 0 | - | 4.98 | 159,413 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,934 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,261 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,272 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,141 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,600 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,181 |
| Countries by Former Name | 0 | - | 4.99 | 125,270 |
| Historical City to Country | 0 | - | 4.84 | 78,606 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,796 |
| African Physical Geography | 0 | - | 4.51 | 31,730 |
| Asian Physical Geography | 0 | - | 4.61 | 35,552 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,815 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,722 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,552 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,946 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,363 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,536 |
| Countries of Europe before World War II with a Map | 0 | - | 4.95 | 53,541 |
| Landforms by Country | 0 | - | 4.52 | 51,978 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,353 |
| Former Flags | 0 | - | 4.97 | 107,896 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,298 |
| Seas of Europe | 0 | - | 4.37 | 84,702 |
| Modern Day Countries of the Kushan Empire on a Map | 0 | - | 4.89 | 25,004 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,992 |
| Battle to Country | 0 | - | 4.91 | 53,461 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,876 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,616 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,192 |
| Rivers A-Z | 0 | - | 4.35 | 32,790 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,890 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,539 |
| Sea in the Answers | 0 | - | 4.10 | 48,994 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,626 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 82,953 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,955 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,228 |
| Ancient City to Country | 0 | - | 4.70 | 108,107 |
| City-States | 0 | - | 4.53 | 37,291 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,705 |
| City Where It Happened #2 | 0 | - | 4.42 | 53,140 |
| City Where It Happened #3 | 0 | - | 4.53 | 40,458 |
| Countries by Independence Day | 0 | - | 4.61 | 52,772 |
| Former Countries by Capital | 0 | - | 4.45 | 127,557 |
| Former Countries | 0 | - | 4.75 | 133,879 |
| Geological Extremes | 0 | - | 4.34 | 40,054 |
| European Physical Geography | 0 | - | 4.26 | 33,531 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,786 |
| Countries by Coastline Per Capita | 0 | - | 4.59 | 23,431 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,005 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,013 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,871 |
| Boundary Waters | 0 | - | 4.92 | 88,534 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,226 |
| WWII Geography | 0 | - | 4.81 | 120,494 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,218 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,635 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,557 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,521 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,178 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,548,474 |
| Landlocked Countries | 0 | - | 4.99 | 421,538 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,164 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,015 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,920 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,474 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,506 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 575,598 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,335 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 107,240 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,695 |
| South American Physical Geography | 0 | - | 4.58 | 18,363 |
| Roman Provinces on a Map | 0 | - | 4.54 | 37,014 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,685 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,976 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,346 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,351 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,123 |
| City Where It Happened #1 | 0 | - | 4.23 | 106,372 |
| World Capitals Quiz | 0 | - | 5.00 | 5,080,766 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,229 |
| Himalayan Countries | 0 | - | 4.95 | 138,520 |
| Andean Countries | 0 | - | 4.93 | 84,496 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,684 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,673 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,315 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,718 |
| Countries in World War I | 0 | - | 4.88 | 228,371 |
| Danube Countries | 0 | - | 4.97 | 71,954 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,953 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,370 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,208 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,679 |
| European Landlocked Countries | 0 | - | 4.99 | 147,081 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,549 |
| Countries with the Most Species | 0 | - | 4.99 | 103,189 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,263 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,856 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,687 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,556 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,699 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,508 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,189 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,607 |
| Countries in the Alps | 0 | - | 4.87 | 118,138 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,802 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,958 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,615 |
| Guerrillas by Country | 0 | - | 4.40 | 41,136 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,553 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,440 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,912 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,620 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,453 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,152 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,218 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,803 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,624 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,487 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,727 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,178 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,427 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,479 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,788 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,273 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,912 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,990 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,717 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,969 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,181 |
| Countries with NO Snakes | 0 | - | 4.51 | 63,607 |
| Largest Countries By Category | 0 | - | 4.97 | 158,132 |
| Countries by Countries | 0 | - | 4.96 | 63,143 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,624 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,266 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,552 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,605 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.77 | 33,451 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,456 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,946 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,634 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,599 |
| Countries with More Cows than People | 0 | - | 4.45 | 61,406 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,676 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,836 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,469 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,476 |
| All 10m+ First-Level Country Subdivisions | 0 | - | 4.98 | 34,896 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,885 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,266 |
| Longest International Borders | 0 | - | 4.99 | 265,125 |
| Countries with Three Borders | 0 | - | 4.96 | 36,583 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,095 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,191 |
| Famous Immigrants and Exiles | 0 | - | 4.45 | 23,511 |
| Colonies of Africa with a Map | 0 | - | 4.78 | 54,519 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,057 |
| Demonym of Every Country | 0 | - | 4.91 | 60,564 |
| People Born on Islands | 0 | - | 4.39 | 52,955 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,216 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,449 |
