| NATO Countries | 0 | - | 4.98 | 276,029 |
| EU Countries Quiz | 0 | - | 4.99 | 270,126 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,645 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,982 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,946,520 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,696 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,107 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,554 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,147 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,837 |
| Countries with NO Military | 0 | - | 4.97 | 61,215 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,940 |
| Landlocked Countries | 0 | - | 4.99 | 413,894 |
| OPEC Countries | 0 | - | 4.74 | 84,830 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,533 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,325 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,781 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,175 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,972 |
| Buddhist Countries | 0 | - | 4.96 | 142,995 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,988 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,167 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,552 |
| Five Top Olympic Medal-Winning Countries by Continent | 0 | - | 4.96 | 142,843 |
| Countries with Most Nobel Prizes by Continent | 0 | - | 4.93 | 59,763 |
| Five Coldest Countries by Continent | 0 | - | 4.97 | 76,250 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,707 |
| Himalayan Countries | 0 | - | 4.95 | 135,465 |
| Andean Countries | 0 | - | 4.94 | 82,874 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,263 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,274 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,955 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,642 |
| Danube Countries | 0 | - | 4.97 | 71,106 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,798 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,566 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,546 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,459 |
| European Landlocked Countries | 0 | - | 4.99 | 145,787 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,251 |
| Countries with the Most Species | 0 | - | 4.99 | 95,258 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,394 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,378 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,974 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,593 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,972 |
| Countries in the Alps | 0 | - | 4.86 | 116,873 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,596 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,310 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,031 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,447 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,204 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,029 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,608 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,781 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,409 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,094 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,203 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,056 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,471 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,781 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,775 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,137 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,680 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,275 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,808 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,473 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,770 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,619 |
| Largest Countries By Category | 0 | - | 4.97 | 156,814 |
| Countries by Countries | 0 | - | 4.96 | 62,286 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,796 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,477 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,216 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,011 |
| Island Countries | 0 | - | 4.99 | 707,743 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,887 |
| Northernmost Countries | 0 | - | 4.99 | 357,905 |
| Countries of South America | 0 | - | 5.00 | 915,330 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,218 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,552 |
| "Land" Countries | 0 | - | 4.98 | 333,730 |
| Countries that Start with A | 0 | - | 4.97 | 2,147,614 |
| Countries that Start with B | 0 | - | 4.95 | 2,280,539 |
| Countries that Start with C | 0 | - | 4.96 | 1,810,888 |
| Countries that Start with D | 0 | - | 4.96 | 701,946 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,978 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,329 |
| Countries that Start with H | 0 | - | 4.96 | 598,291 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,640 |
| Countries that Start with J | 0 | - | 4.98 | 596,339 |
| Countries that Start with K | 0 | - | 4.97 | 809,685 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,248 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,128 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,899 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,034 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,497 |
| Countries that Start with U | 0 | - | 4.97 | 900,133 |
| Countries that Start with V | 0 | - | 4.98 | 605,300 |
| Countries that Start with F | 0 | - | 4.83 | 612,459 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,751 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,106 |
| Orthodox Countries | 0 | - | 4.91 | 130,448 |
| Richest Island Countries | 0 | - | 4.84 | 99,571 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,193 |
| Monarchies of Europe | 0 | - | 4.90 | 97,368 |
| Monarchies of Asia | 0 | - | 4.97 | 70,621 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,518 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,452 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,325 |
| Countries with the Most Exports | 0 | - | 4.96 | 154,214 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,548 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,573 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,690 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,278 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,993 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,751 |
| Five Countries by a Single Word by Continent | 0 | - | 4.91 | 77,246 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,518 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,468 |
| Countries with Megacities | 0 | - | 4.99 | 247,304 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,305 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,104 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,735 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,030 |
| Countries by Official Language | 0 | - | 4.95 | 192,834 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,205 |
| Countries in their Native Language | 0 | - | 4.99 | 196,700 |
| Independence from Whom | 0 | - | 4.99 | 209,782 |
| Subdivisions by Country | 0 | - | 4.86 | 50,081 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,819 |
| Megadiverse Countries | 0 | - | 4.97 | 133,928 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,864 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,932 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,439 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,868 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,705 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,027 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,098 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,174 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,228 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,648 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,441 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,512 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,518 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,130 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,913 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,361 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,361 |
| Communist Countries in History | 0 | - | 4.63 | 492,674 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,420 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,040 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,981 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,857 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,900 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,096 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,303 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,353 |
| Widest Countries East to West | 0 | - | 4.92 | 128,630 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,220 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,266 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,586 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,713 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,663 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,083 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,057 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,592 |
| Countries with Double Letters | 0 | - | 4.96 | 93,443 |
| Countries that End in N | 0 | - | 4.94 | 156,945 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,752 |
| Countries with Six Letters | 0 | - | 4.93 | 210,417 |
| Countries with W | 0 | - | 4.97 | 158,272 |
| Countries with Z | 0 | - | 4.98 | 287,948 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,596 |
| Countries That End in U | 0 | - | 4.95 | 119,540 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,633 |
| Countries that End in O | 0 | - | 4.92 | 158,578 |
| Countries that End in R | 0 | - | 4.87 | 118,291 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,870 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,142 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,376 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,524 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,065 |
| Countries That End in Y | 0 | - | 4.90 | 185,223 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,427 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,725 |
| Countries that End in I | 0 | - | 4.94 | 134,445 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,258 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,217 |
| Countries That End in NIA | 0 | - | 4.92 | 109,030 |
| Countries That End in BIA | 0 | - | 4.92 | 147,741 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,105 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,516 |
| Countries That End in RIA | 0 | - | 4.93 | 126,107 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,040 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,250 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,546 |
