| City to Country Quiz #1 | 0 | - | 4.97 | 155,830 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,716 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,768 |
| Historical City to Country | 0 | - | 4.84 | 78,431 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,326,332 |
| Landlocked Countries | 0 | - | 4.99 | 418,821 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,134 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,951 |
| Himalayan Countries | 0 | - | 4.94 | 137,380 |
| Andean Countries | 0 | - | 4.95 | 83,911 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,206 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,622 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,818 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,338 |
| Danube Countries | 0 | - | 4.97 | 71,644 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,530 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,044 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,619 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,704 |
| European Landlocked Countries | 0 | - | 4.99 | 146,762 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,112 |
| Countries with the Most Species | 0 | - | 4.99 | 102,896 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,248 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,429 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,583 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,292 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,976 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,352 |
| Countries in the Alps | 0 | - | 4.87 | 117,669 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,119 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,344 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,402 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,970 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,078 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,459 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,268 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,174 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,961 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,543 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,470 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,333 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,912 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,179 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,199 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,151 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,055 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,562 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,503 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,306 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,197 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,989 |
| Largest Countries By Category | 0 | - | 4.97 | 157,617 |
| Countries by Countries | 0 | - | 4.96 | 62,827 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,191 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,156 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,312 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,861 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,566 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,030 |
| Island Countries | 0 | - | 4.99 | 709,696 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,927 |
| Northernmost Countries | 0 | - | 4.99 | 360,404 |
| Countries of South America | 0 | - | 5.00 | 922,749 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,818 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,990 |
| "Land" Countries | 0 | - | 4.98 | 335,770 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,466 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,325 |
| City to Country Quiz #4 | 0 | - | 4.53 | 84,088 |
| City to Country Quiz #5 | 0 | - | 4.74 | 80,958 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,440 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,987 |
| Countries with Megacities | 0 | - | 4.99 | 259,061 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,860 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,973 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,144 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,974 |
| Countries by Official Language | 0 | - | 4.95 | 194,620 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,498 |
| Countries in their Native Language | 0 | - | 4.99 | 198,164 |
| Independence from Whom | 0 | - | 4.99 | 211,278 |
| Subdivisions by Country | 0 | - | 4.86 | 50,282 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,682 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,532 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,179 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,742 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,012 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,696 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,373 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,961 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,835 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,475 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,986 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,925 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,704 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,985 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,767 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,141 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,318 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,156 |
| World Map Quiz | 0 | - | 4.81 | 64,501 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,552 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,022 |
| Countries by Founding Story | 0 | - | 4.95 | 77,051 |
| Countries by Road Signs | 0 | - | 4.98 | 53,644 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,476 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,916 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,628 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,302 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,506 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,664 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,820 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,255 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,274 |
| Widest Countries East to West | 0 | - | 4.92 | 129,355 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,380 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,947 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,503 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,209 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,532 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,227 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,071 |
| Countries that End in N | 0 | - | 4.95 | 169,954 |
| Countries with Five Letters | 0 | - | 4.96 | 280,073 |
| Countries with Six Letters | 0 | - | 4.94 | 212,451 |
| Countries with W | 0 | - | 4.97 | 159,510 |
| Countries with Z | 0 | - | 4.98 | 289,777 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,721 |
| Countries That End in U | 0 | - | 4.95 | 120,405 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,733 |
| Countries that End in O | 0 | - | 4.92 | 159,190 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,506 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,311 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,092 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,070 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,657 |
| Countries That End in Y | 0 | - | 4.90 | 185,644 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,210 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,409 |
| Countries that End in I | 0 | - | 4.94 | 134,858 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,057 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,568 |
| Countries That End in NIA | 0 | - | 4.92 | 109,509 |
| Countries That End in BIA | 0 | - | 4.93 | 148,834 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,698 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,046 |
| Countries That End in RIA | 0 | - | 4.93 | 126,525 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,612 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,660 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,208 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,562 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,097 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,315 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,676 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,229 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,111 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,188 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,810 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,525 |
| Countries that End in L | 0 | - | 4.94 | 156,535 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,954 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,756 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,147 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,608 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,112 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,596 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,576 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,947 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,593 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,653 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,112 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,686 |
| One Border Countries | 0 | - | 4.98 | 467,623 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,822,222 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,544 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,985 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,548 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,394 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,668 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,258 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,363 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,921 |
| Countries by National Anthem | 0 | - | 4.93 | 71,179 |
| NATO Countries | 0 | - | 4.98 | 279,282 |
| EU Countries Quiz | 0 | - | 4.99 | 272,876 |
| Recently Independent Countries | 0 | - | 4.98 | 159,000 |
| French-Speaking Countries | 0 | - | 4.85 | 270,187 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,755 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,543 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,436 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,880 |
| German-Speaking Countries | 0 | - | 4.91 | 145,308 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,254 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,829 |
