| Airport Codes Quiz #1 | 0 | - | 4.81 | 215,314 |
| Busiest Airports in Europe | 0 | - | 4.91 | 146,389 |
| World's Busiest Airports | 0 | - | 4.96 | 234,509 |
| Countries with the Most Airports | 0 | - | 4.96 | 99,111 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,550,127 |
| Tourist Attraction by Negative Review | 0 | - | 4.85 | 82,471 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,955 |
| Top World Languages | 0 | - | 4.92 | 823,695 |
| Busiest Airports in the United States | 0 | - | 4.54 | 135,696 |
| Airport Codes Quiz #2 | 0 | - | 4.39 | 97,196 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,197 |
| Cities by Airports | 0 | - | 4.49 | 88,798 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 136,032 |
| Countries with Most Tourists with Exceptions | 0 | - | 4.97 | 125,770 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 121,764 |
| Busiest Air Routes in the World | 0 | - | 4.54 | 38,407 |
| Airports Named for People #1 | 0 | - | 4.44 | 55,953 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,551 |
| World Currency Quiz | 0 | - | 4.92 | 303,879 |
| Boundary Waters | 0 | - | 4.92 | 88,537 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,227 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,218 |
| Lonely Planet Top 200 Cities | 0 | - | 4.52 | 221,074 |
| Cities with the Most International Tourists | 0 | - | 4.45 | 54,184 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 61,854 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,171 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,520 |
| Places in their Native Language #2 | 0 | - | 4.80 | 134,443 |
| Tourist Route of Europe | 0 | - | 4.24 | 42,932 |
| Landlocked Countries | 0 | - | 4.99 | 421,552 |
| U.S. National Parks Map Quiz | 0 | - | 4.48 | 55,947 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,687 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,351 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,357 |
| 25 Most Photographed Cities in Europe | 0 | - | 4.36 | 100,646 |
| World Capitals Quiz | 0 | - | 5.00 | 5,080,904 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,238 |
| Himalayan Countries | 0 | - | 4.95 | 138,531 |
| Andean Countries | 0 | - | 4.93 | 84,506 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,688 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,680 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,317 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,721 |
| Danube Countries | 0 | - | 4.97 | 71,955 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,954 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,374 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,214 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,681 |
| European Landlocked Countries | 0 | - | 4.99 | 147,082 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,553 |
| Countries with the Most Species | 0 | - | 4.99 | 103,191 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,687 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,557 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,700 |
| 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 | 57,611 |
| Countries in the Alps | 0 | - | 4.87 | 118,143 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,115 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,814 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,962 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,616 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,555 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,442 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,914 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,622 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,454 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,154 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,805 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,627 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,490 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,180 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,430 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,479 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,791 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,273 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,994 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,992 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,726 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,974 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,182 |
| Largest Countries By Category | 0 | - | 4.97 | 158,135 |
| Countries by Countries | 0 | - | 4.96 | 63,145 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,266 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,637 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,743 |
| 50 Largest Countries on the World Map Quiz | 0 | - | 4.98 | 145,677 |
| Western Europe Map Quiz | 0 | - | 4.86 | 93,841 |
| Demonyms Quiz | 0 | - | 4.15 | 185,276 |
| Who Controls It? #1 | 0 | - | 4.83 | 48,477 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,893 |
| Border Crossings Quiz #2 | 0 | - | 4.99 | 128,266 |
| Longest International Borders | 0 | - | 4.99 | 265,127 |
| Countries with Three Borders | 0 | - | 4.96 | 36,584 |
| Country Connect by Northernmost Point | 0 | - | 4.96 | 42,098 |
| Largest Cities for each Latitude Degree | 0 | - | 4.99 | 48,192 |
| Demonym of Every Country | 0 | - | 4.91 | 60,571 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,233 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,518 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,389 |
| Island Countries | 0 | - | 4.99 | 710,896 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,336 |
| Northernmost Countries | 0 | - | 4.99 | 361,773 |
| Countries of South America | 0 | - | 5.00 | 926,737 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,121 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,930 |
| "Land" Countries | 0 | - | 4.98 | 337,211 |
| World's Biggest Airlines | 0 | - | 4.42 | 125,399 |
| Airline Logos | 0 | - | 4.45 | 140,926 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,645 |
| Europe Map Quiz | 0 | - | 5.00 | 4,768,348 |
| All Country Flags of the World | 0 | - | 5.00 | 3,675,105 |
| Foods of the World by Description | 0 | - | 4.18 | 46,056 |
| Analogies of Countries #1 | 0 | - | 4.89 | 68,441 |
| Pacific Ocean General Knowledge | 0 | - | 4.70 | 36,327 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,497 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,814 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,782 |
| Countries with Megacities | 0 | - | 4.99 | 264,312 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,644 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,408 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,903 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,477 |
| Biggest Cities in the World | 0 | - | 4.91 | 800,338 |
| Cities by Tourist Attraction #1 | 0 | - | 3.63 | 81,133 |
| Cities by Famous Street | 0 | - | 3.96 | 48,334 |
| Cities by Tourist Attraction #2 | 0 | - | 3.73 | 32,143 |
| Global Cities on a World Map | 0 | - | 4.93 | 136,375 |
| Northernmost Capital Cities | 0 | - | 4.98 | 110,459 |
| Most Remote Capital Cities | 0 | - | 4.92 | 53,509 |
| Capital Cities: Ports and Saints | 0 | - | 4.96 | 45,624 |
| Capitals with the Shortest Names | 0 | - | 4.97 | 109,418 |
| Same Letter Country and Capital | 0 | - | 4.99 | 157,227 |
| Countries by Capital City | 0 | - | 5.00 | 68,534 |
| Capital Cities Based on First Two Letters | 0 | - | 4.85 | 77,307 |
| Capitals of the Largest Countries by Area | 0 | - | 4.97 | 114,767 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,915 |
| Divided Capital Name Puzzle #1 | 0 | - | 4.99 | 84,342 |
| Moved Capital Cities | 0 | - | 4.96 | 74,298 |
| Countries by Official Language | 0 | - | 4.95 | 195,173 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,252 |
| Countries in their Native Language | 0 | - | 4.99 | 198,970 |
| Independence from Whom | 0 | - | 4.99 | 211,984 |
| Subdivisions by Country | 0 | - | 4.86 | 50,411 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,654 |
| Megadiverse Countries | 0 | - | 4.96 | 134,977 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,010 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,329 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,163 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,091 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,062 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,573 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,405 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,002 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,624 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,122 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,603 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,851 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,177 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,940 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,331 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,470 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,056 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,308 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,004 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,231 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,954 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,092 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,842 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,974 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,264 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,416 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,541 |
| Widest Countries East to West | 0 | - | 4.92 | 129,605 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,439 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,334 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,105 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,738 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,550 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,819 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,359 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,791 |
| Airlines by Country | 0 | - | 4.52 | 135,480 |
| Countries with Double Letters | 0 | - | 4.96 | 96,127 |
| Countries that End in N | 0 | - | 4.95 | 171,010 |
| Countries with Five Letters | 0 | - | 4.96 | 282,234 |
| Countries with Six Letters | 0 | - | 4.94 | 213,439 |
| Countries with W | 0 | - | 4.97 | 160,249 |
| Countries with Z | 0 | - | 4.98 | 291,318 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,609 |
| Countries That End in U | 0 | - | 4.95 | 120,801 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,374 |
| Countries that End in O | 0 | - | 4.92 | 159,477 |
| Countries that End in R | 0 | - | 4.87 | 118,940 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,699 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,988 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,627 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,425 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,347 |
| Countries That End in Y | 0 | - | 4.91 | 185,844 |
