| City to Country Quiz #1 | 0 | - | 4.97 | 155,975 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,902 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,948 |
| Landlocked Countries | 0 | - | 4.99 | 421,397 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,535,691 |
| Historical City to Country | 0 | - | 4.84 | 78,600 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,168 |
| Himalayan Countries | 0 | - | 4.95 | 138,458 |
| Andean Countries | 0 | - | 4.93 | 84,460 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,652 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,623 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,288 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,691 |
| Danube Countries | 0 | - | 4.97 | 71,943 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,929 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,356 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,178 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,642 |
| European Landlocked Countries | 0 | - | 4.99 | 147,066 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,521 |
| Countries with the Most Species | 0 | - | 4.99 | 103,176 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,671 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,548 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,694 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,499 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,179 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,595 |
| Countries in the Alps | 0 | - | 4.87 | 118,111 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,683 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,924 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,604 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,540 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,423 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,896 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,591 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,442 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,139 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,791 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,617 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,481 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,162 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,418 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,456 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,745 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,246 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,970 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,639 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,930 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,171 |
| Largest Countries By Category | 0 | - | 4.97 | 158,096 |
| Countries by Countries | 0 | - | 4.96 | 63,131 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,601 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,255 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,545 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,611 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,774,406 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,090 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,344 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,855 |
| Island Countries | 0 | - | 4.99 | 710,826 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,085 |
| Northernmost Countries | 0 | - | 4.99 | 361,694 |
| Countries of South America | 0 | - | 5.00 | 926,453 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,782 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,338 |
| "Land" Countries | 0 | - | 4.98 | 337,149 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,456 |
| City to Country Quiz #4 | 0 | - | 4.56 | 84,190 |
| City to Country Quiz #5 | 0 | - | 4.74 | 81,075 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,528 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,182 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,741 |
| Countries with Megacities | 0 | - | 4.99 | 264,191 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,594 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,391 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,855 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,454 |
| Countries by Official Language | 0 | - | 4.95 | 195,130 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,206 |
| Countries in their Native Language | 0 | - | 4.99 | 198,926 |
| Independence from Whom | 0 | - | 4.99 | 211,950 |
| Subdivisions by Country | 0 | - | 4.86 | 50,400 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,630 |
| Megadiverse Countries | 0 | - | 4.96 | 134,964 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,976 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,320 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,987 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,088 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,037 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,559 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,381 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,996 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,614 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,082 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,561 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,844 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,163 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,930 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,317 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,463 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,012 |
| World Map Quiz | 0 | - | 4.81 | 65,009 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,958 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,292 |
| Countries by Founding Story | 0 | - | 4.95 | 77,314 |
| Countries by Road Signs | 0 | - | 4.98 | 53,953 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,979 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,210 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,935 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,051 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,822 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,959 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,251 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,408 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,524 |
| Widest Countries East to West | 0 | - | 4.92 | 129,591 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,436 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,318 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,099 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,725 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,525 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,799 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,350 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,789 |
| Countries with Double Letters | 0 | - | 4.96 | 96,081 |
| Countries that End in N | 0 | - | 4.95 | 170,966 |
| Countries with Five Letters | 0 | - | 4.96 | 282,154 |
| Countries with Six Letters | 0 | - | 4.94 | 213,387 |
| Countries with W | 0 | - | 4.97 | 160,210 |
| Countries with Z | 0 | - | 4.98 | 291,269 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,567 |
| Countries That End in U | 0 | - | 4.95 | 120,775 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,337 |
| Countries that End in O | 0 | - | 4.92 | 159,462 |
| Countries that End in R | 0 | - | 4.87 | 118,925 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,686 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,944 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,605 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,408 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,322 |
| Countries That End in Y | 0 | - | 4.91 | 185,835 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,811 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,769 |
| Countries that End in I | 0 | - | 4.94 | 135,047 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,985 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,771 |
| Countries That End in NIA | 0 | - | 4.92 | 109,722 |
| Countries That End in BIA | 0 | - | 4.93 | 149,130 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,026 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,362 |
| Countries That End in RIA | 0 | - | 4.93 | 126,767 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,950 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,419 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,605 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,994 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,569 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,540 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,956 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,427 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,462 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,383 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,207 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,898 |
| Countries that End in L | 0 | - | 4.94 | 156,771 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,403 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,245 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,632 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,572 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,923 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,455 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,339 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,815 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,066 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,685 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,836 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,221 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,745 |
| One Border Countries | 0 | - | 4.98 | 469,521 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 23,015 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,832,505 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,629,037 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,833 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,059 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,038 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,498 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,656 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,168 |
| Countries by National Anthem | 0 | - | 4.93 | 71,269 |
| NATO Countries | 0 | - | 4.98 | 281,136 |
| EU Countries Quiz | 0 | - | 4.99 | 275,061 |
| Recently Independent Countries | 0 | - | 4.98 | 159,390 |
| French-Speaking Countries | 0 | - | 4.85 | 270,737 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,873 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,335 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,980 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,959 |
| German-Speaking Countries | 0 | - | 4.91 | 145,671 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,921 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,250 |
