| City to Country Quiz #1 | 0 | - | 4.96 | 155,616 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,440 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,513 |
| Landlocked Countries | 0 | - | 4.99 | 415,139 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,039,050 |
| Historical City to Country | 0 | - | 4.84 | 78,222 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,202 |
| Himalayan Countries | 0 | - | 4.95 | 135,899 |
| Andean Countries | 0 | - | 4.94 | 83,134 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,456 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,568 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,157 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,810 |
| Danube Countries | 0 | - | 4.97 | 71,244 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,968 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,684 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,821 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,744 |
| European Landlocked Countries | 0 | - | 4.99 | 145,945 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,483 |
| Countries with the Most Species | 0 | - | 4.99 | 95,329 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,614 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,262 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,435 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,053 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,705 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,060 |
| Countries in the Alps | 0 | - | 4.86 | 117,090 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,733 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,551 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,145 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,565 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,357 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,127 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,769 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,884 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,668 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,197 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,264 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,131 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,600 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,862 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,875 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,418 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,785 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,343 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,000 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,154 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,132 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,712 |
| Largest Countries By Category | 0 | - | 4.97 | 156,991 |
| Countries by Countries | 0 | - | 4.96 | 62,419 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,630 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,014 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,375 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,918 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,729,037 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,641 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,691 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,658 |
| Island Countries | 0 | - | 4.99 | 708,244 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,450 |
| Northernmost Countries | 0 | - | 4.99 | 358,592 |
| Countries of South America | 0 | - | 5.00 | 917,472 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,643 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,574 |
| "Land" Countries | 0 | - | 4.98 | 334,047 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,174 |
| City to Country Quiz #4 | 0 | - | 4.53 | 83,970 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,828 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,331 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,406 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,847 |
| Countries with Megacities | 0 | - | 4.99 | 248,058 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,720 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,312 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,104 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,266 |
| Countries by Official Language | 0 | - | 4.95 | 193,118 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,621 |
| Countries in their Native Language | 0 | - | 4.99 | 196,962 |
| Independence from Whom | 0 | - | 4.99 | 210,095 |
| Subdivisions by Country | 0 | - | 4.86 | 50,136 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,030 |
| Megadiverse Countries | 0 | - | 4.97 | 134,270 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,123 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,002 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,527 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,900 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,857 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,110 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,299 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,401 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,287 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,781 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,874 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,502 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,606 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,575 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,782 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,113 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,055 |
| World Map Quiz | 0 | - | 4.81 | 63,756 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,527 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,554 |
| Countries by Founding Story | 0 | - | 4.95 | 76,695 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,741 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,490 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,215 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,252 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,087 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,292 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,480 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,063 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,509 |
| Widest Countries East to West | 0 | - | 4.92 | 129,009 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,281 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,457 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,640 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,849 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,801 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,209 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,442 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,636 |
| Countries with Double Letters | 0 | - | 4.96 | 93,656 |
| Countries that End in N | 0 | - | 4.94 | 157,120 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,998 |
| Countries with Six Letters | 0 | - | 4.93 | 210,655 |
| Countries with W | 0 | - | 4.97 | 158,407 |
| Countries with Z | 0 | - | 4.98 | 288,209 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,744 |
| Countries That End in U | 0 | - | 4.95 | 119,600 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,852 |
| Countries that End in O | 0 | - | 4.92 | 158,641 |
| Countries that End in R | 0 | - | 4.87 | 118,366 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,926 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,389 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,529 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,637 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,185 |
| Countries That End in Y | 0 | - | 4.90 | 185,279 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,598 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,881 |
| Countries that End in I | 0 | - | 4.94 | 134,530 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,446 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,289 |
| Countries That End in NIA | 0 | - | 4.92 | 109,110 |
| Countries That End in BIA | 0 | - | 4.92 | 147,844 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,236 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,626 |
| Countries That End in RIA | 0 | - | 4.93 | 126,190 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,166 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,671 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,661 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,016 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,568 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,018 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,274 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,784 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,669 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,885 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,329 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,976 |
| Countries that End in L | 0 | - | 4.94 | 156,146 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,050 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,019 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,928 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,608 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,601 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,633 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,999 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,908 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,807 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,239 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,460 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,406 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,600 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,282 |
| One Border Countries | 0 | - | 4.98 | 465,526 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,931 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,807,138 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,595,725 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,132 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,482 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,131 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,614 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,925 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,496 |
| Countries by National Anthem | 0 | - | 4.93 | 71,070 |
| NATO Countries | 0 | - | 4.98 | 277,108 |
| EU Countries Quiz | 0 | - | 4.99 | 270,821 |
| Recently Independent Countries | 0 | - | 4.98 | 158,180 |
| French-Speaking Countries | 0 | - | 4.85 | 269,231 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,441 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,492 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,660 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,341 |
| German-Speaking Countries | 0 | - | 4.89 | 123,593 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,865 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,505 |
