| Summer Olympic City Bids | 0 | - | 4.94 | 42,565 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,022 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,043 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,537 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,660 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,230 |
| Countries with Megacities | 0 | - | 4.99 | 267,273 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,915 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,174 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,232 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,287 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,488 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,580 |
| Biggest Cities in the World | 0 | - | 4.91 | 805,852 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,476 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,349 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,191 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,697 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,920 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,244 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,642 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,964 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,998 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 32,822 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,488 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,505 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 150,107 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,816 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,270 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,991 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,642 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,747 |
| Ten Southernmost Megacities | 0 | - | 4.84 | 65,233 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,426 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,468 |
| North American Sports Cities | 0 | - | 4.82 | 173,183 |
| Olympic Host Countries | 0 | - | 4.98 | 202,013 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,735 |
| Biggest Cities in the United States | 0 | - | 4.94 | 987,403 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,119 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,032 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,390 |
| Winter Olympics Hosts | 0 | - | 4.41 | 87,755 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,205 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,445 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,924 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,388 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,706 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,776 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,909 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,206 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,631 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,707 |
| Largest City by Island | 0 | - | 4.87 | 72,469 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,437 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,719 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,166 |
| Megacities on a World Map | 0 | - | 4.98 | 257,036 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 582,130 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,782 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,710 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,506 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,712 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,852 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,917 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,552 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,213 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,525 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,869 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,784 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,692 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,960 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 145,191 |
| Boundary Waters | 0 | - | 4.92 | 88,780 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,424 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,722 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,371 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,988 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,994 |
| Most Populous Islands | 0 | - | 4.80 | 123,357 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,385 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,654 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,577 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,169 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,905 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,926 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,988 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,885 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,003 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,502 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,582 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,822 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,011 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,198 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,442 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 348,848 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,246 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,529 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,268 |
| Countries with the Most Downhill Skiing | 0 | - | 4.89 | 57,717 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,897,301 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,150 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,803 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,128 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,657 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,164 |
| Biggest City by Region | 0 | - | 4.50 | 36,395 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,344 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,323 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,989 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,831 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,760 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,310 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,446 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,567 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,525 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,576 |
| Big 4 Sports Championship Cities | 0 | - | 4.43 | 120,867 |
| Landlocked Countries | 0 | - | 4.99 | 426,128 |
| Countries with the Fastest Marathoners | 0 | - | 4.51 | 95,993 |
| Countries with the Fastest 100 Meter Sprinters | 0 | - | 4.44 | 86,659 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 589,164 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,936 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,420 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,774 |
| Population Trivia | 0 | - | 4.32 | 27,572 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,105 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 48,066 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,356 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,715 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,472 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,244 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,940 |
| World Capitals Quiz | 0 | - | 5.00 | 5,107,628 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,391 |
| Himalayan Countries | 0 | - | 4.93 | 140,347 |
| Andean Countries | 0 | - | 4.94 | 85,522 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,671 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,090 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,246 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,479 |
| Danube Countries | 0 | - | 4.97 | 72,434 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,631 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,865 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,181 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,656 |
| European Landlocked Countries | 0 | - | 4.99 | 147,631 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,343 |
| Countries with the Most Species | 0 | - | 4.99 | 103,584 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,438 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,784 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,895 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,858 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,593 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,039 |
| Countries in the Alps | 0 | - | 4.87 | 118,816 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,695 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,921 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,978 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,045 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,986 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,284 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,434 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,884 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,442 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,203 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,895 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,755 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,575 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,821 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,910 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,903 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,634 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 74,312 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,710 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,826 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,208 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,532 |
| Largest Countries By Category | 0 | - | 4.97 | 158,895 |
| Countries by Countries | 0 | - | 4.96 | 63,665 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,290 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,412 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,677 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,066 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,450 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,126 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,805,931 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 146,484 |
| Western Europe Map Quiz | 0 | - | 4.85 | 93,991 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,815 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,622 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,156 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,586 |
| Longest International Borders | 0 | - | 4.99 | 265,844 |
| Countries with Three Borders | 0 | - | 4.96 | 36,784 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,369 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,505 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.86 | 37,184 |
| Demonym of Every Country | 0 | - | 4.90 | 61,508 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,894 |
