| City to Country Quiz #1 | 0 | - | 4.96 | 155,713 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,564 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,616 |
| Landlocked Countries | 0 | - | 4.99 | 416,697 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,167,134 |
| Historical City to Country | 0 | - | 4.84 | 78,329 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,958 |
| Himalayan Countries | 0 | - | 4.95 | 136,522 |
| Andean Countries | 0 | - | 4.95 | 83,498 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,762 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,013 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,432 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,032 |
| Danube Countries | 0 | - | 4.97 | 71,436 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,220 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,852 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,166 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,142 |
| European Landlocked Countries | 0 | - | 4.99 | 146,133 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,770 |
| Countries with the Most Species | 0 | - | 4.99 | 101,680 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,904 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,331 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,511 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,162 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,810 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,193 |
| Countries in the Alps | 0 | - | 4.86 | 117,334 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,911 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,903 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,253 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,744 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,828 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,256 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,992 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,996 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,808 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,332 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,367 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,205 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,730 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,002 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,007 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,721 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,897 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,432 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,252 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,036 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,574 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,830 |
| Largest Countries By Category | 0 | - | 4.97 | 157,263 |
| Countries by Countries | 0 | - | 4.96 | 62,594 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,878 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,082 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,087 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,882 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,884 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,837 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,812 |
| Island Countries | 0 | - | 4.99 | 708,831 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,394 |
| Northernmost Countries | 0 | - | 4.99 | 359,397 |
| Countries of South America | 0 | - | 5.00 | 919,740 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,765 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,907 |
| "Land" Countries | 0 | - | 4.98 | 334,619 |
| City to Country Quiz #2 | 0 | - | 4.78 | 108,247 |
| City to Country Quiz #4 | 0 | - | 4.53 | 84,027 |
| City to Country Quiz #5 | 0 | - | 4.75 | 80,887 |
| City to Country Quiz #6 | 0 | - | 4.56 | 65,384 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,564 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,293 |
| Countries with Megacities | 0 | - | 4.99 | 248,974 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,144 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,555 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,493 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,510 |
| Countries by Official Language | 0 | - | 4.95 | 194,017 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,585 |
| Countries in their Native Language | 0 | - | 4.99 | 197,638 |
| Independence from Whom | 0 | - | 4.99 | 210,818 |
| Subdivisions by Country | 0 | - | 4.86 | 50,201 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,337 |
| Megadiverse Countries | 0 | - | 4.96 | 134,543 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,840 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,077 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,631 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,447 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,219 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,599 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,550 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,371 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,807 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,182 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,580 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,687 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,646 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,860 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,202 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,573 |
| World Map Quiz | 0 | - | 4.81 | 64,096 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,395 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,702 |
| Countries by Founding Story | 0 | - | 4.95 | 76,879 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,066 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,670 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,400 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,717 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,269 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,465 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,631 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,151 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,638 |
| Widest Countries East to West | 0 | - | 4.92 | 129,140 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,329 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,659 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,923 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,959 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,983 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,361 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,103 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,676 |
| Countries with Double Letters | 0 | - | 4.96 | 94,146 |
| Countries that End in N | 0 | - | 4.95 | 165,880 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,591 |
| Countries with Six Letters | 0 | - | 4.93 | 211,146 |
| Countries with W | 0 | - | 4.97 | 158,816 |
| Countries with Z | 0 | - | 4.98 | 288,775 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,037 |
| Countries That End in U | 0 | - | 4.95 | 119,923 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,160 |
| Countries that End in O | 0 | - | 4.92 | 158,867 |
| Countries that End in R | 0 | - | 4.87 | 118,510 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,288 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,756 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,738 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,812 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,380 |
| Countries That End in Y | 0 | - | 4.90 | 185,425 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,835 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,090 |
| Countries that End in I | 0 | - | 4.94 | 134,667 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,694 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,411 |
| Countries That End in NIA | 0 | - | 4.92 | 109,295 |
| Countries That End in BIA | 0 | - | 4.93 | 148,565 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,428 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,770 |
| Countries That End in RIA | 0 | - | 4.93 | 126,346 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,333 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,082 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,870 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,205 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,784 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,142 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,438 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,940 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,835 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,998 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,524 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,205 |
| Countries that End in L | 0 | - | 4.94 | 156,289 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,894 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,069 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,324 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,809 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,330 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,821 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,250 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,049 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,869 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,294 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,524 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,520 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,007 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,860 |
| One Border Countries | 0 | - | 4.98 | 466,423 |
| 48 Asian Countries, 48 Cities | 0 | - | 4.52 | 22,959 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,813,716 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,424 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,274 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,906 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,332 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,088 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,089 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,634 |
| Countries by National Anthem | 0 | - | 4.92 | 71,119 |
| NATO Countries | 0 | - | 4.98 | 278,123 |
| EU Countries Quiz | 0 | - | 4.99 | 271,648 |
| Recently Independent Countries | 0 | - | 4.98 | 158,385 |
| French-Speaking Countries | 0 | - | 4.85 | 269,753 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,545 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,947 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,396 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,419 |
| German-Speaking Countries | 0 | - | 4.91 | 143,733 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,034 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,653 |
