| Summer Olympic City Bids | 0 | - | 4.93 | 42,291 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,824 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,046 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,854 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,689 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,262 |
| Countries with Megacities | 0 | - | 4.99 | 262,441 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,092 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,117 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,396 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,168 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,521 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,044 |
| Biggest Cities in the World | 0 | - | 4.91 | 797,822 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,827 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,640 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,611 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,797 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,340 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,464 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,013 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,770 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,321 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,701 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,166 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 133,444 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,669 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,391 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,729 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 57,412 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,940 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,083 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,531 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,130 |
| North American Sports Cities | 0 | - | 4.83 | 172,268 |
| Olympic Host Countries | 0 | - | 4.98 | 200,585 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,022 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,197 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,877 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,828 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,240 |
| Winter Olympics Hosts | 0 | - | 4.41 | 87,412 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,525 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,506 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,548 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,341 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,812 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,078 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,241 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,862 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,383 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,252 |
| Largest City by Island | 0 | - | 4.87 | 71,789 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,881 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,825 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,370 |
| Megacities on a World Map | 0 | - | 4.98 | 254,144 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 577,656 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,294 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,846 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,461 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,232 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,870 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,189 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,144 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,648 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,218 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,498 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,171 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,875 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,027 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 144,025 |
| Boundary Waters | 0 | - | 4.92 | 88,429 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,125 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,008 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,333 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,411 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,342 |
| Most Populous Islands | 0 | - | 4.80 | 122,869 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,290 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,521 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,707 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,712 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,186 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,746 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,788 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,389 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,153 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,183 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,851 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,364 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,048 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,820 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,965 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 345,226 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,270 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,896 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,663 |
| Countries with the Most Downhill Skiing | 0 | - | 4.89 | 57,335 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,396,882 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,607 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,376 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,495 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,069 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,952 |
| Biggest City by Region | 0 | - | 4.50 | 36,177 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,105 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,867 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,488 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,141 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,660 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,173 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,341 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,219 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,170 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,395 |
| Big 4 Sports Championship Cities | 0 | - | 4.43 | 120,081 |
| Landlocked Countries | 0 | - | 4.99 | 419,721 |
| Countries with the Fastest Marathoners | 0 | - | 4.51 | 95,471 |
| Countries with the Fastest 100 Meter Sprinters | 0 | - | 4.44 | 86,106 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 570,207 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,546 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,733 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,474 |
| Population Trivia | 0 | - | 4.32 | 27,484 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,165 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,173 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,277 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,325 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,700 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,680 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,136 |
| World Capitals Quiz | 0 | - | 5.00 | 5,068,753 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,320 |
| Himalayan Countries | 0 | - | 4.95 | 137,759 |
| Andean Countries | 0 | - | 4.95 | 84,100 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,339 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,871 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,968 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,446 |
| Danube Countries | 0 | - | 4.97 | 71,740 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,665 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,141 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,805 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,881 |
| European Landlocked Countries | 0 | - | 4.99 | 146,864 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,242 |
| Countries with the Most Species | 0 | - | 4.99 | 103,007 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,401 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,621 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,372 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,045 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,440 |
| Countries in the Alps | 0 | - | 4.87 | 117,823 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,217 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,546 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,472 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,318 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,211 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,781 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,375 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,262 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,627 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,524 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,373 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,994 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,262 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,283 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,356 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,118 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,624 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,661 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,751 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,447 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,043 |
| Largest Countries By Category | 0 | - | 4.97 | 157,789 |
| Countries by Countries | 0 | - | 4.96 | 62,925 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,328 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,182 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,487 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,813 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,722 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,415 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,115 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,479 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,771 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,300 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,419 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,349 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,131 |
| Longest International Borders | 0 | - | 4.99 | 264,816 |
| Countries with Three Borders | 0 | - | 4.96 | 36,496 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,960 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,084 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,024 |
| Demonym of Every Country | 0 | - | 4.91 | 59,236 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,496 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,000 |
