| City to Country Quiz #1 | 0 | - | 4.97 | 155,920 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,840 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,888 |
| Landlocked Countries | 0 | - | 4.99 | 420,650 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,468,877 |
| Historical City to Country | 0 | - | 4.84 | 78,541 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,780 |
| Himalayan Countries | 0 | - | 4.95 | 138,137 |
| Andean Countries | 0 | - | 4.95 | 84,288 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,509 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,373 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,141 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,588 |
| Danube Countries | 0 | - | 4.97 | 71,845 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,811 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,251 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,000 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,451 |
| European Landlocked Countries | 0 | - | 4.99 | 146,981 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,394 |
| Countries with the Most Species | 0 | - | 4.99 | 103,103 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,552 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,510 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,664 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,451 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,124 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,514 |
| Countries in the Alps | 0 | - | 4.87 | 117,969 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 99,659 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,740 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,551 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,461 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,321 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,838 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,480 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,347 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,083 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,710 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,571 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,424 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,078 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,357 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,370 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,561 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,185 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,697 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,833 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,233 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,703 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,115 |
| Largest Countries By Category | 0 | - | 4.97 | 157,945 |
| Countries by Countries | 0 | - | 4.97 | 63,024 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,477 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,221 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,516 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,515 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,335 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,393 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,080 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,316 |
| Island Countries | 0 | - | 4.99 | 710,460 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,020 |
| Northernmost Countries | 0 | - | 4.99 | 361,281 |
| Countries of South America | 0 | - | 5.00 | 925,246 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,248 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,299 |
| "Land" Countries | 0 | - | 4.98 | 336,588 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,411 |
| City to Country Quiz #4 | 0 | - | 4.56 | 84,147 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,035 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,495 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,040 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,493 |
| Countries with Megacities | 0 | - | 4.99 | 263,510 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,342 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,268 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,629 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,302 |
| Countries by Official Language | 0 | - | 4.95 | 194,957 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,980 |
| Countries in their Native Language | 0 | - | 4.99 | 198,473 |
| Independence from Whom | 0 | - | 4.99 | 211,739 |
| Subdivisions by Country | 0 | - | 4.86 | 50,368 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,008 |
| Megadiverse Countries | 0 | - | 4.96 | 134,900 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,818 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,267 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,851 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,061 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,927 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,489 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,235 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,943 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,568 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,045 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,364 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,798 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,102 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,874 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,257 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,421 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,725 |
| World Map Quiz | 0 | - | 4.81 | 64,888 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,464 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,203 |
| Countries by Founding Story | 0 | - | 4.95 | 77,232 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,806 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,107 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,840 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,807 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,741 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,871 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,180 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,360 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,449 |
| Widest Countries East to West | 0 | - | 4.92 | 129,518 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,418 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,185 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,067 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,645 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,422 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,712 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,314 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,767 |
| Countries with Double Letters | 0 | - | 4.97 | 95,528 |
| Countries that End in N | 0 | - | 4.95 | 170,555 |
| Countries with Five Letters | 0 | - | 4.96 | 281,555 |
| Countries with Six Letters | 0 | - | 4.94 | 212,957 |
| Countries with W | 0 | - | 4.97 | 159,863 |
| Countries with Z | 0 | - | 4.98 | 290,788 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,134 |
| Countries That End in U | 0 | - | 4.95 | 120,581 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,079 |
| Countries that End in O | 0 | - | 4.92 | 159,325 |
| Countries that End in R | 0 | - | 4.87 | 118,827 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,604 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,681 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,366 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,260 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,874 |
| Countries That End in Y | 0 | - | 4.91 | 185,753 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,572 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,650 |
| Countries that End in I | 0 | - | 4.94 | 134,977 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,765 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,696 |
| Countries That End in NIA | 0 | - | 4.92 | 109,646 |
| Countries That End in BIA | 0 | - | 4.93 | 149,007 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,900 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,238 |
| Countries That End in RIA | 0 | - | 4.93 | 126,671 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,803 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,169 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,450 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,844 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,377 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,443 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,832 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,372 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,329 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,304 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,047 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,765 |
| Countries that End in L | 0 | - | 4.94 | 156,683 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,886 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,204 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,457 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,421 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,829 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,360 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,862 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,735 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,026 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,683 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,646 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,770 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,901 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,385 |
| One Border Countries | 0 | - | 4.98 | 468,683 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,004 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,386 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,129 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,726 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,835 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,917 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,402 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,553 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,091 |
| Countries by National Anthem | 0 | - | 4.93 | 71,247 |
| NATO Countries | 0 | - | 4.98 | 280,494 |
| EU Countries Quiz | 0 | - | 4.99 | 274,355 |
| Recently Independent Countries | 0 | - | 4.98 | 159,264 |
| French-Speaking Countries | 0 | - | 4.85 | 270,535 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,838 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,081 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,439 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,305 |
| German-Speaking Countries | 0 | - | 4.92 | 145,582 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,829 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,180 |
