| Countries of the World Quiz | 0 | - | 5.00 | 41,410,342 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,266 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,128,910 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,196,740 |
| Members of the Arab League | 0 | - | 4.85 | 64,723 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,008 |
| Himalayan Countries | 0 | - | 4.95 | 106,957 |
| Andean Countries | 0 | - | 4.91 | 59,492 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,560 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,308 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,678 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,569 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,864 |
| Danube Countries | 0 | - | 4.96 | 57,007 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,025 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,121 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,101 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,976 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,260 |
| European Landlocked Countries | 0 | - | 4.99 | 136,579 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,389 |
| Countries with the Most Species | 0 | - | 4.99 | 89,712 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,889 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,892 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,188 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,735 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,675 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,950 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,563 |
| Countries in the Alps | 0 | - | 4.84 | 103,361 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,965 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,469 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,983 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,044 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,521 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,009 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,175 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,515 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,544 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,104 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,869 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,829 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,878 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,218 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,383 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,941 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,493 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,692 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,776 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,699 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,243 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,600 |
| Largest Countries By Category | 0 | - | 4.97 | 145,807 |
| Countries by Countries | 0 | - | 4.96 | 55,193 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,475 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,993 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,006 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,180 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,518 |
| Island Countries Quiz | 0 | - | 4.99 | 665,198 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,010 |
| Northernmost Countries | 0 | - | 4.99 | 329,473 |
| Countries of South America | 0 | - | 5.00 | 803,026 |
| Countries of Oceania | 0 | - | 5.00 | 905,055 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,594,634 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,737 |
| Countries with Megacities | 0 | - | 4.99 | 199,996 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,548 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,064 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,117 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,042 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,777 |
| Countries by Official Language | 0 | - | 4.96 | 174,280 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,422 |
| Countries in their Native Language | 0 | - | 4.98 | 179,474 |
| Independence from Whom | 0 | - | 4.99 | 187,706 |
| Subdivisions by Country | 0 | - | 4.82 | 46,710 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,695 |
| Megadiverse Countries | 0 | - | 4.96 | 126,203 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,593 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,178 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,652 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,412 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,545 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,893 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,716 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,415 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,692 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,520 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,981 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,619 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,166 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,053 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,689 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 84,584 |
| World Map Quiz | 0 | - | 4.91 | 50,547 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,301 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,210 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,639 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,973 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,223 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,920 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,108 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,495 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,564 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,623 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,099 |
| Widest Countries East to West | 0 | - | 4.93 | 120,063 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,010 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,880 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,412 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,024 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,189 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,082 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,792 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,647 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,261 |
| Countries with Double Letters | 0 | - | 4.96 | 70,116 |
| Countries that End in N | 0 | - | 4.94 | 134,324 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,700 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,050 |
| Countries with W | 0 | - | 4.96 | 124,264 |
| Countries with Z | 0 | - | 4.98 | 246,367 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,500 |
| Countries That End in U | 0 | - | 4.95 | 108,388 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,922 |
| Countries that End in O | 0 | - | 4.92 | 147,919 |
| Countries that End in R | 0 | - | 4.84 | 96,888 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,688 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,824 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,990 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,171 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,114 |
| Countries That End in Y | 0 | - | 4.90 | 162,039 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,136 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,807 |
| Countries that End in I | 0 | - | 4.92 | 114,888 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,682 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,993 |
| Countries That End in NIA | 0 | - | 4.93 | 101,404 |
| Countries That End in BIA | 0 | - | 4.91 | 126,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,345 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,440 |
| Countries That End in RIA | 0 | - | 4.90 | 101,517 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,169 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,078 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,797 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,864 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,481 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,262 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,527 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,319 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,366 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,704 |
| Countries that End in L | 0 | - | 4.95 | 135,302 |
| "Land" Countries | 0 | - | 4.98 | 291,364 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,506 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,312 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,894 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,703 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,196 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,895 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 169,004 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,248 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,109 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,329 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,700 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,299 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,853 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,879 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,998 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,321,127 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,603 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,094,788 |
| One Border Countries | 0 | - | 4.98 | 412,949 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,435,999 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,427 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,855 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 246,955 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,892 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,909 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,483 |
| Countries by National Anthem | 0 | - | 4.95 | 62,043 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,768 |
| EU Countries Quiz | 0 | - | 4.99 | 229,986 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,535 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,177 |
| Countries That Use the Euro | 0 | - | 4.93 | 64,862 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 227,804 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 229,984 |
| German-Speaking Countries | 0 | - | 4.88 | 117,978 |
| Countries with Wild Tigers | 0 | - | 4.95 | 111,961 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,936 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 132,818 |
| Top Five Countries by Religion | 0 | - | 4.90 | 144,358 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 90,532 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 82,330 |
| Olympic Host Countries | 0 | - | 4.98 | 163,382 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 115,244 |
| Anagram Chain - Countries | 0 | - | 4.98 | 98,361 |
