| Countries by Three Words #2 | 0 | - | 4.97 | 200,800 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,447 |
| European Countries by Clue | 0 | - | 4.92 | 183,076 |
| Countries by a Single Clue #5 | 0 | - | 4.91 | 100,666 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,574 |
| The Only American Country ... | 0 | - | 4.92 | 121,117 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,620 |
| Bordering Countries by Clue #1 | 0 | - | 4.97 | 82,842 |
| Bordering Countries by Clue #2 | 0 | - | 4.95 | 87,002 |
| Walking Across Borders with Hints #1 | 0 | - | 4.95 | 107,379 |
| Walking Across Borders with Hints #2 | 0 | - | 4.97 | 86,326 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,119,204 |
| Landlocked Countries | 0 | - | 4.99 | 416,072 |
| Countries by Wikipedia Descriptions #1 | 0 | - | 4.93 | 65,151 |
| Countries by Wikipedia Descriptions #4 | 0 | - | 4.87 | 56,784 |
| Countries by Three Words #3 | 0 | - | 4.80 | 128,038 |
| Countries by Three Words #4 | 0 | - | 4.44 | 99,423 |
| Countries by a Single Clue #1 | 0 | - | 4.75 | 100,450 |
| Countries by a Single Clue #2 | 0 | - | 4.48 | 94,770 |
| Countries by a Single Clue #3 | 0 | - | 4.63 | 86,583 |
| Countries by a Single Clue #4 | 0 | - | 4.49 | 76,785 |
| Countries by a Single Clue #6 | 0 | - | 4.49 | 86,753 |
| Countries by a Single Clue #8 | 0 | - | 4.44 | 94,715 |
| Countries by a Single Clue #10 | 0 | - | 4.55 | 67,708 |
| Countries by a Single Clue #11 | 0 | - | 4.58 | 76,341 |
| Countries by a Single Clue #12 | 0 | - | 4.48 | 78,785 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,736,671 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,641 |
| Himalayan Countries | 0 | - | 4.95 | 136,256 |
| Andean Countries | 0 | - | 4.95 | 83,339 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,611 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,826 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,312 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,929 |
| Danube Countries | 0 | - | 4.97 | 71,335 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,119 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,794 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,025 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,979 |
| European Landlocked Countries | 0 | - | 4.99 | 146,054 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,664 |
| Countries with the Most Species | 0 | - | 4.99 | 98,114 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,809 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,305 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,480 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,119 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,763 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,135 |
| Countries in the Alps | 0 | - | 4.86 | 117,258 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,847 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,763 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,215 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,668 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,597 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,209 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,917 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,956 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,755 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,287 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,327 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,184 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,678 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,941 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,945 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,610 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,853 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,390 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,135 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,690 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,436 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,784 |
| Largest Countries By Category | 0 | - | 4.97 | 157,181 |
| Countries by Countries | 0 | - | 4.96 | 62,535 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,798 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,062 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,400 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,035 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,411 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,551 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,321 |
| Island Countries | 0 | - | 4.99 | 708,623 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,681 |
| Northernmost Countries | 0 | - | 4.99 | 359,082 |
| Countries of South America | 0 | - | 5.00 | 918,914 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,690 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,750 |
| Countries Ending in "IA" by Clue #1 | 0 | - | 4.74 | 70,278 |
| "Land" Countries | 0 | - | 4.98 | 334,289 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,031 |
| Countries by a Single Clue #7 | 0 | - | 4.37 | 70,214 |
| Countries by a Single Clue #9 | 0 | - | 4.37 | 72,990 |
| Countries by a Single Word | 0 | - | 4.69 | 28,720 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,135 |
| Countries with Megacities | 0 | - | 4.99 | 248,642 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,996 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,467 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,375 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,417 |
| Countries by Official Language | 0 | - | 4.95 | 193,802 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,298 |
| Countries in their Native Language | 0 | - | 4.99 | 197,456 |
| Independence from Whom | 0 | - | 4.99 | 210,412 |
| Subdivisions by Country | 0 | - | 4.86 | 50,173 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,224 |
| Megadiverse Countries | 0 | - | 4.96 | 134,500 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,665 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,058 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,599 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,936 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,155 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,178 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,481 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,507 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,335 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,078 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,556 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,654 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,624 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,829 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,168 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,369 |
| World Map Quiz | 0 | - | 4.81 | 63,954 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,074 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,649 |
| Countries by Founding Story | 0 | - | 4.95 | 76,817 |
| Countries by Road Signs | 0 | - | 4.98 | 53,350 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,957 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,610 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,330 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,550 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,199 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,394 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,573 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,116 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,600 |
| Widest Countries East to West | 0 | - | 4.92 | 129,096 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,308 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,579 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,781 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,922 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,309 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,984 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,657 |
| Countries with Double Letters | 0 | - | 4.96 | 93,825 |
| Countries that End in N | 0 | - | 4.94 | 157,259 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,221 |
| Countries with Six Letters | 0 | - | 4.93 | 210,853 |
| Countries with W | 0 | - | 4.97 | 158,515 |
| Countries with Z | 0 | - | 4.98 | 288,412 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,860 |
| Countries That End in U | 0 | - | 4.95 | 119,667 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,011 |
| Countries that End in O | 0 | - | 4.92 | 158,699 |
| Countries that End in R | 0 | - | 4.87 | 118,417 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,969 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,578 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,641 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,726 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,298 |
| Countries That End in Y | 0 | - | 4.90 | 185,327 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,742 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,002 |
| Countries that End in I | 0 | - | 4.94 | 134,597 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,604 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,364 |
| Countries That End in NIA | 0 | - | 4.92 | 109,226 |
| Countries That End in BIA | 0 | - | 4.93 | 148,461 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,350 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,707 |
| Countries That End in RIA | 0 | - | 4.93 | 126,263 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,256 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,930 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,775 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,133 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,679 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,078 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,358 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,884 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,768 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,947 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,437 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,103 |
| Countries that End in L | 0 | - | 4.94 | 156,212 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,580 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,039 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,682 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,517 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,577 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,198 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,740 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,156 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,762 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,176 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,000 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,854 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,274 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,490 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,476 |
