| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,843 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,063 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,773 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,288 |
| Countries with Megacities | 0 | - | 4.99 | 262,614 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,123 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,135 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,423 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,183 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,699 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,088 |
| Biggest Cities in the World | 0 | - | 4.91 | 797,959 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,841 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,657 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,633 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,815 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,349 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,480 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,021 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,810 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,361 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,758 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,198 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 133,522 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,702 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,427 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,760 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 58,138 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,957 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,180 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,549 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,154 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,832 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,244 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,098 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,361 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,929 |
| Boundary Waters | 0 | - | 4.92 | 88,435 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,129 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,019 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,348 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,417 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,353 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,564 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,526 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,553 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,360 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,827 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,088 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,262 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,869 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,429 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,267 |
| Largest City by Island | 0 | - | 4.87 | 71,801 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,894 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,845 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,389 |
| Megacities on a World Map | 0 | - | 4.98 | 254,241 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,305 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,861 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,490 |
| Three Biggest Cities by Time Zone With Map | 0 | - | 4.98 | 34,758 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,248 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,891 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,201 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,154 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,673 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,221 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,511 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,182 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,888 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,040 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 577,717 |
| Most Populous Islands | 0 | - | 4.80 | 122,874 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,292 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,523 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,796 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,192 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,369 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,738 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,734 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,208 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,768 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,395 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,168 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,862 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,064 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,848 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,989 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 345,265 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,299 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,906 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,675 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,406,377 |
| Landlocked Countries | 0 | - | 4.99 | 419,822 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 570,540 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,551 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,749 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,484 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,621 |
| Population Trivia | 0 | - | 4.32 | 27,487 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,385 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,506 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,070 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,958 |
| Biggest City by Region | 0 | - | 4.50 | 36,185 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,113 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,876 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,495 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,172 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,682 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,174 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,343 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,222 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,192 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,396 |
| World Capitals Quiz | 0 | - | 5.00 | 5,069,502 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,374 |
| Himalayan Countries | 0 | - | 4.95 | 137,807 |
| Andean Countries | 0 | - | 4.95 | 84,120 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,345 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,903 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,983 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,459 |
| Danube Countries | 0 | - | 4.97 | 71,752 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,679 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,151 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,829 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,901 |
| European Landlocked Countries | 0 | - | 4.99 | 146,875 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,263 |
| Countries with the Most Species | 0 | - | 4.99 | 103,017 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,419 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,461 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,631 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,382 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,055 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,450 |
| Countries in the Alps | 0 | - | 4.87 | 117,843 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,233 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,569 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,477 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,360 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,223 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,783 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,385 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,269 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,031 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,634 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,531 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,378 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,000 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,273 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,291 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,393 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,124 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,634 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,689 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,821 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,480 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,051 |
| Largest Countries By Category | 0 | - | 4.97 | 157,802 |
| Countries by Countries | 0 | - | 4.97 | 62,939 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,354 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,186 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,492 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,854 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,737 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,431 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,763,001 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,493 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,780 |
| Tourist Attraction by Negative Review | 0 | - | 4.86 | 82,309 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,424 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,378 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,137 |
| Longest International Borders | 0 | - | 4.99 | 264,832 |
| Countries with Three Borders | 0 | - | 4.96 | 36,503 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 41,968 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,091 |
| Countries with the Lowest Maximum Elevation | 0 | - | 4.85 | 37,031 |
| Demonym of Every Country | 0 | - | 4.91 | 59,252 |
| Pacific Ocean General Knowledge | 0 | - | 4.69 | 36,302 |
| The Same Prefixes - Geography | 0 | - | 4.48 | 47,726 |
| "Second Best" Geography Edition #1 | 0 | - | 4.61 | 63,386 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,513 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,055 |
| Biggest Cities in History | 0 | - | 4.52 | 90,097 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 77,087 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,179 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,187 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,300 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,392 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,335 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,711 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,711 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,147 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,436 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,363 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,268 |
