| City to Country Quiz #1 | 0 | - | 4.97 | 155,484 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,261 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,395 |
| Landlocked Countries | 0 | - | 4.99 | 413,190 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,882,264 |
| Historical City to Country | 0 | - | 4.84 | 78,107 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,393 |
| Himalayan Countries | 0 | - | 4.95 | 135,168 |
| Andean Countries | 0 | - | 4.94 | 82,738 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,153 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,084 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,824 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,520 |
| Danube Countries | 0 | - | 4.97 | 71,035 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,699 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,491 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,369 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,293 |
| European Landlocked Countries | 0 | - | 4.99 | 145,705 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,118 |
| Countries with the Most Species | 0 | - | 4.99 | 95,217 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,270 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,190 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,352 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,930 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,542 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,906 |
| Countries in the Alps | 0 | - | 4.87 | 116,751 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,516 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,164 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,976 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,374 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,102 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,961 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,515 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,720 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,928 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,009 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,179 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,014 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,401 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,705 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,713 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,966 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,598 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,224 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,724 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,025 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,480 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,569 |
| Largest Countries By Category | 0 | - | 4.97 | 156,681 |
| Countries by Countries | 0 | - | 4.96 | 62,216 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,306 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,949 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,311 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,713 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,712,727 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,375 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,976 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,400 |
| Island Countries | 0 | - | 4.99 | 707,414 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,864 |
| Northernmost Countries | 0 | - | 4.99 | 357,466 |
| Countries of South America | 0 | - | 5.00 | 913,980 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,348 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,608 |
| "Land" Countries | 0 | - | 4.98 | 333,517 |
| City to Country Quiz #2 | 0 | - | 4.79 | 108,081 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,884 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,757 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,048 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,966 |
| Countries with Megacities | 0 | - | 4.99 | 246,452 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,881 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,779 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,346 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,737 |
| Countries by Official Language | 0 | - | 4.95 | 192,673 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,995 |
| Countries in their Native Language | 0 | - | 4.99 | 196,542 |
| Independence from Whom | 0 | - | 4.99 | 209,572 |
| Subdivisions by Country | 0 | - | 4.86 | 50,043 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,656 |
| Megadiverse Countries | 0 | - | 4.97 | 133,852 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,715 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,899 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,399 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,586 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,966 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,698 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,106 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,198 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,729 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,467 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,388 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,461 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,478 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,640 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,999 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,436 |
| World Map Quiz | 0 | - | 4.81 | 63,428 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,422 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,271 |
| Countries by Founding Story | 0 | - | 4.95 | 76,480 |
| Countries by Road Signs | 0 | - | 4.98 | 53,051 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,239 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,924 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,892 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,601 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,810 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,013 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,219 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,907 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,294 |
| Widest Countries East to West | 0 | - | 4.92 | 128,561 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,205 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,151 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,540 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,656 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,571 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,989 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,043 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,557 |
| Countries with Double Letters | 0 | - | 4.97 | 93,289 |
| Countries that End in N | 0 | - | 4.94 | 156,350 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,573 |
| Countries with Six Letters | 0 | - | 4.93 | 210,263 |
| Countries with W | 0 | - | 4.97 | 158,159 |
| Countries with Z | 0 | - | 4.98 | 287,742 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,478 |
| Countries That End in U | 0 | - | 4.95 | 119,479 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,446 |
| Countries that End in O | 0 | - | 4.92 | 158,507 |
| Countries that End in R | 0 | - | 4.87 | 118,240 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,836 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,928 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,242 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,429 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,792 |
| Countries That End in Y | 0 | - | 4.90 | 185,177 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,272 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,599 |
| Countries that End in I | 0 | - | 4.94 | 134,360 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,101 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,165 |
| Countries That End in NIA | 0 | - | 4.92 | 108,960 |
| Countries That End in BIA | 0 | - | 4.92 | 147,654 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,013 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,440 |
| Countries That End in RIA | 0 | - | 4.93 | 126,047 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,961 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,083 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,476 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,855 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,303 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,903 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,071 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,596 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,448 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,793 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,068 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,746 |
| Countries that End in L | 0 | - | 4.94 | 155,680 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,920 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,974 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,601 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,020 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,872 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,118 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,308 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,472 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,592 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,157 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,405 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,280 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,205 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,414 |
| One Border Countries | 0 | - | 4.98 | 463,974 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,613 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.51 | 22,916 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,799,118 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,585,590 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,766 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,795 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,803 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,434 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,532 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,196 |
| Countries by National Anthem | 0 | - | 4.92 | 71,007 |
| NATO Countries | 0 | - | 4.98 | 275,426 |
| EU Countries Quiz | 0 | - | 4.99 | 269,677 |
| Recently Independent Countries | 0 | - | 4.98 | 157,926 |
| French-Speaking Countries | 0 | - | 4.85 | 268,681 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,352 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,850 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,710 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,968 |
| German-Speaking Countries | 0 | - | 4.89 | 123,486 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,569 |
