| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,477 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 122,845 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,103 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,881 |
| Countries with Megacities | 0 | - | 4.99 | 246,234 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,799 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,744 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,267 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,680 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,433,611 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,141 |
| Biggest Cities in the World | 0 | - | 4.92 | 789,309 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,035 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,732 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,713 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,758 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,408 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,494 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,158 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,480 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,438 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,536 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,691 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,641 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,345 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,405 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,418 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 52,948 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,063 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,645 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,573 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,287 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,629 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,069 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,243 |
| Biggest Cities in the United States | 0 | - | 4.93 | 965,152 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,493 |
| Boundary Waters | 0 | - | 4.92 | 87,993 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,787 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,182 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,137 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,766 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,656 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,717 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,054 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,091 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,174 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,766 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,300 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,476 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,229 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,230 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,695 |
| Largest City by Island | 0 | - | 4.87 | 70,951 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,247 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,405 |
| Biggest European Cities by Century | 0 | - | 4.98 | 135,496 |
| Megacities on a World Map | 0 | - | 4.98 | 250,350 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,721 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,759 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,493 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,008 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,311 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,167 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,186 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,510 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,489 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,724 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,106 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,002 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 168,966 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 572,654 |
| Most Populous Islands | 0 | - | 4.78 | 121,913 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,191 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,392 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,587 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,802 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,860 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,724 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,815 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,694 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,902 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,766 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,271 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,057 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,771 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,101 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,510 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,646 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,343 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,222 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,472 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,856,882 |
| Landlocked Countries | 0 | - | 4.99 | 412,931 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 550,781 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,112 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,909 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,079 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,371 |
| Population Trivia | 0 | - | 4.32 | 27,412 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,874 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,843 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,881 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,648 |
| Biggest City by Region | 0 | - | 4.50 | 35,971 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,870 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,485 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,041 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,286 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,460 |
| Northernmost Major City by Country | 0 | - | 4.56 | 32,995 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,203 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,887 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,666 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,233 |
| World Capitals Quiz | 0 | - | 5.00 | 5,026,065 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,267 |
| Himalayan Countries | 0 | - | 4.95 | 135,072 |
| Andean Countries | 0 | - | 4.94 | 82,679 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,092 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,007 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,777 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,483 |
| Danube Countries | 0 | - | 4.97 | 71,009 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,647 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,464 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,302 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,223 |
| European Landlocked Countries | 0 | - | 4.99 | 145,675 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,062 |
| Countries with the Most Species | 0 | - | 4.99 | 95,193 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,213 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,178 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,334 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,913 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,518 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,873 |
| Countries in the Alps | 0 | - | 4.87 | 116,696 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,483 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,095 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,948 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,335 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,072 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,940 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,479 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,691 |
| Largest Country by Body of Water | 0 | - | 4.95 | 56,022 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,975 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,166 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,000 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,369 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,682 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,680 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,889 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,573 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,206 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,684 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,871 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,395 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,547 |
| Largest Countries By Category | 0 | - | 4.97 | 156,632 |
| Countries by Countries | 0 | - | 4.96 | 62,174 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,232 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,936 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,306 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,411 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,012 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,663 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,710,387 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 144,639 |
| Western Europe Map Quiz | 0 | - | 4.87 | 93,457 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 81,487 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,213 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,167 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 127,552 |
| Longest International Borders | 0 | - | 4.99 | 263,384 |
| Countries with Three Borders | 0 | - | 4.96 | 36,135 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,561 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 47,609 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 36,833 |
| Demonym of Every Country | 0 | - | 4.91 | 58,573 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,201 |
| The Same Prefixes - Geography | 0 | - | 4.49 | 47,349 |
| "Second Best" Geography Edition #1 | 0 | - | 4.64 | 62,979 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,279 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,588 |
| Biggest Cities in History | 0 | - | 4.52 | 89,047 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,060 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,133 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,368 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,146 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,157 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,610 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,627 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,317 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,450 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,149 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,953 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,399 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,874 |
