| Countries of the World Quiz | 0 | - | 5.00 | 41,381,767 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 329,908 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,125,292 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,194,348 |
| Members of the Arab League | 0 | - | 4.85 | 64,583 |
| Sahara Desert Countries | 0 | - | 4.97 | 128,911 |
| Himalayan Countries | 0 | - | 4.95 | 106,857 |
| Andean Countries | 0 | - | 4.91 | 59,428 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,492 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,258 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,626 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,537 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,835 |
| Danube Countries | 0 | - | 4.96 | 56,987 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,007 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,112 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,041 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,942 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,230 |
| European Landlocked Countries | 0 | - | 4.99 | 136,461 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,353 |
| Countries with the Most Species | 0 | - | 4.99 | 89,702 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,857 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,881 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,173 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,703 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,663 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,935 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,547 |
| Countries in the Alps | 0 | - | 4.84 | 103,315 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,929 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,381 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,959 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,014 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,482 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,992 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,142 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,496 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,528 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,087 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,840 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,811 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,864 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,193 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,351 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,921 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,406 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,676 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,742 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,481 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,149 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,580 |
| Largest Countries By Category | 0 | - | 4.97 | 145,748 |
| Countries by Countries | 0 | - | 4.96 | 55,148 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,417 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,978 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,963 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,070 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,245 |
| Island Countries Quiz | 0 | - | 4.99 | 664,913 |
| Biggest Countries by Area | 0 | - | 5.00 | 940,519 |
| Northernmost Countries | 0 | - | 4.99 | 329,359 |
| Countries of South America | 0 | - | 5.00 | 802,506 |
| Countries of Oceania | 0 | - | 5.00 | 904,430 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,593,346 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,640 |
| Countries with Megacities | 0 | - | 4.99 | 199,846 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,434 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,014 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 97,024 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,982 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,639 |
| Countries by Official Language | 0 | - | 4.96 | 174,193 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,298 |
| Countries in their Native Language | 0 | - | 4.98 | 179,411 |
| Independence from Whom | 0 | - | 4.99 | 187,586 |
| Subdivisions by Country | 0 | - | 4.82 | 46,700 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,616 |
| Megadiverse Countries | 0 | - | 4.96 | 126,174 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,518 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,140 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,637 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,372 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,515 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,825 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,690 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,400 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,677 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,485 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,954 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,589 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,151 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,026 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,652 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 84,444 |
| World Map Quiz | 0 | - | 4.91 | 50,474 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,137 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,167 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,552 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,915 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,155 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,798 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,072 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,446 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,509 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,571 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,061 |
| Widest Countries East to West | 0 | - | 4.93 | 120,020 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,996 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,832 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,998 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,155 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,035 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,757 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,632 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,253 |
| Countries with Double Letters | 0 | - | 4.96 | 70,000 |
| Countries that End in N | 0 | - | 4.94 | 134,229 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,583 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 188,952 |
| Countries with W | 0 | - | 4.96 | 124,191 |
| Countries with Z | 0 | - | 4.98 | 246,259 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,420 |
| Countries That End in U | 0 | - | 4.95 | 108,326 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,824 |
| Countries that End in O | 0 | - | 4.92 | 147,548 |
| Countries that End in R | 0 | - | 4.84 | 96,849 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,666 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,731 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 156,929 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,130 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,067 |
| Countries That End in Y | 0 | - | 4.90 | 162,009 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,088 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,564 |
| Countries that End in I | 0 | - | 4.92 | 114,859 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,627 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,964 |
| Countries That End in NIA | 0 | - | 4.93 | 101,381 |
| Countries That End in BIA | 0 | - | 4.91 | 126,755 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,296 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,408 |
| Countries That End in RIA | 0 | - | 4.90 | 101,486 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,127 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 202,988 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,758 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 111,784 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,414 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,231 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,472 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,292 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,316 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,656 |
| Countries that End in L | 0 | - | 4.95 | 135,266 |
| "Land" Countries | 0 | - | 4.98 | 291,278 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,446 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,303 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,860 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,670 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,173 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,809 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 168,876 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,215 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,046 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,249 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,648 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,280 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,804 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,850 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,973 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,320,522 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,470 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,093,104 |
| One Border Countries | 0 | - | 4.98 | 412,797 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,432,080 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,394 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,803 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 246,851 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,843 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,876 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,393 |
| Countries by National Anthem | 0 | - | 4.95 | 62,031 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,552 |
| EU Countries Quiz | 0 | - | 4.99 | 229,785 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,478 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,156 |
| Countries That Use the Euro | 0 | - | 4.93 | 64,766 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 227,651 |
| Countries with Nuclear Weapons | 0 | - | 4.88 | 222,348 |
| German-Speaking Countries | 0 | - | 4.88 | 117,964 |
| Countries with Wild Tigers | 0 | - | 4.95 | 111,928 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,897 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 132,697 |
| Top Five Countries by Religion | 0 | - | 4.90 | 144,124 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 90,419 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 82,128 |
| Olympic Host Countries | 0 | - | 4.98 | 163,311 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 112,925 |
| Anagram Chain - Countries | 0 | - | 4.98 | 98,290 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 94,134 |
