| Countries of the World Quiz | 0 | - | 5.00 | 46,845,562 |
| Majority Muslim Countries | 0 | - | 4.98 | 367,955 |
| NATO Countries | 0 | - | 4.98 | 275,043 |
| EU Countries Quiz | 0 | - | 4.99 | 269,378 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,417 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 267,598 |
| Top Five Countries by Religion | 0 | - | 4.93 | 168,738 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,548 |
| Countries with NO Military | 0 | - | 4.97 | 61,046 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,822 |
| Landlocked Countries | 0 | - | 4.99 | 412,825 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,230 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,120 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,589 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 73,979 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,506 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,785 |
| Buddhist Countries | 0 | - | 4.96 | 142,815 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,384 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 121,795 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,709,190 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,206 |
| Himalayan Countries | 0 | - | 4.95 | 135,032 |
| Andean Countries | 0 | - | 4.94 | 82,648 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,074 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 122,969 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,745 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,453 |
| Danube Countries | 0 | - | 4.97 | 70,986 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,630 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,450 |
| Countries with the Worst Passports | 0 | - | 4.93 | 82,269 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,182 |
| European Landlocked Countries | 0 | - | 4.99 | 145,658 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,034 |
| Countries with the Most Species | 0 | - | 4.99 | 95,179 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,179 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,172 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,331 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,500 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,861 |
| Countries in the Alps | 0 | - | 4.87 | 116,674 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,459 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,050 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,935 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,315 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,058 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,932 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,454 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,675 |
| Largest Country by Body of Water | 0 | - | 4.95 | 55,079 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,963 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,163 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,992 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,356 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,667 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,667 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,846 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,554 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,196 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,656 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,793 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,338 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,527 |
| Largest Countries By Category | 0 | - | 4.97 | 156,595 |
| Countries by Countries | 0 | - | 4.96 | 62,155 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,648 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 322,959 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,802 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 400,946 |
| Island Countries | 0 | - | 4.99 | 707,205 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,246 |
| Northernmost Countries | 0 | - | 4.99 | 357,197 |
| Countries of South America | 0 | - | 5.00 | 913,245 |
| Countries of Oceania | 0 | - | 5.00 | 1,038,424 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,844,820 |
| "Land" Countries | 0 | - | 4.98 | 333,398 |
| Countries that Start with A | 0 | - | 4.98 | 2,144,410 |
| Countries that Start with B | 0 | - | 4.95 | 2,277,803 |
| Countries that Start with C | 0 | - | 4.96 | 1,808,597 |
| Countries that Start with D | 0 | - | 4.96 | 700,405 |
| Countries that Start with E | 0 | - | 4.95 | 1,366,152 |
| Countries that Start with G | 0 | - | 4.97 | 1,491,336 |
| Countries that Start with H | 0 | - | 4.96 | 596,968 |
| Countries that Start with I | 0 | - | 4.92 | 1,279,089 |
| Countries that Start with J | 0 | - | 4.98 | 595,044 |
| Countries that Start with K | 0 | - | 4.96 | 808,534 |
| Countries that Start with L | 0 | - | 4.98 | 1,081,834 |
| Countries that Start with N | 0 | - | 4.93 | 1,108,686 |
| Countries that Start with P | 0 | - | 4.94 | 1,207,525 |
| Countries that Start with S | 0 | - | 4.98 | 1,743,070 |
| Countries that Start with T | 0 | - | 4.90 | 1,003,357 |
| Countries that Start with U | 0 | - | 4.97 | 898,958 |
| Countries that Start with V | 0 | - | 4.98 | 604,472 |
| Countries that Start with F | 0 | - | 4.83 | 611,400 |
| Countries that Start with M | 0 | - | 4.97 | 1,372,131 |
| Countries with the Most Catholics | 0 | - | 4.90 | 107,860 |
| Orthodox Countries | 0 | - | 4.91 | 130,238 |
| Richest Island Countries | 0 | - | 4.84 | 99,357 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,359,854 |
| Monarchies of Europe | 0 | - | 4.90 | 97,191 |
| Monarchies of Asia | 0 | - | 4.97 | 70,527 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,239 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,374 |
| Countries with the Most Muslims | 0 | - | 4.95 | 159,144 |
| Countries with the Most Exports | 0 | - | 4.96 | 153,986 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 188,296 |
| Countries by Oil Consumption | 0 | - | 4.96 | 119,433 |
| Largest Economies in 2050 | 0 | - | 4.90 | 110,517 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 261,651 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.95 | 102,786 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.90 | 83,574 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,454 |
| Five Biggest Economies by Continent | 0 | - | 4.98 | 193,710 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 117,306 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,849 |
| Countries with Megacities | 0 | - | 4.99 | 246,122 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,760 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,726 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,226 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,659 |
| Countries by Official Language | 0 | - | 4.95 | 192,575 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,842 |
| Countries in their Native Language | 0 | - | 4.99 | 196,446 |
| Independence from Whom | 0 | - | 4.99 | 209,434 |
| Subdivisions by Country | 0 | - | 4.86 | 50,030 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,576 |
| Megadiverse Countries | 0 | - | 4.97 | 133,827 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,635 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,873 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,367 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,830 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,527 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,577 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,058 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,170 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,710 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,361 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,358 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,422 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,437 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 90,992 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,643 |
| Large Countries with Small Economies | 0 | - | 4.94 | 80,221 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,205 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,140 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,869 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,841 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,482 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,755 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,956 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,164 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,870 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,248 |
| Widest Countries East to West | 0 | - | 4.92 | 128,512 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,191 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,070 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,516 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,617 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,512 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,941 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,029 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,551 |
| Countries with Double Letters | 0 | - | 4.97 | 93,202 |
| Countries that End in N | 0 | - | 4.94 | 156,267 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,460 |
| Countries with Six Letters | 0 | - | 4.93 | 210,160 |
| Countries with W | 0 | - | 4.97 | 158,084 |
| Countries with Z | 0 | - | 4.98 | 287,257 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,420 |
| Countries That End in U | 0 | - | 4.95 | 119,435 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,308 |
| Countries that End in O | 0 | - | 4.92 | 158,467 |
| Countries that End in R | 0 | - | 4.86 | 118,193 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,805 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,848 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,173 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,373 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,560 |
| Countries That End in Y | 0 | - | 4.90 | 185,144 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,161 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,538 |
| Countries that End in I | 0 | - | 4.94 | 134,294 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,000 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,135 |
| Countries That End in NIA | 0 | - | 4.92 | 108,918 |
| Countries That End in BIA | 0 | - | 4.92 | 147,601 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,954 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,390 |
| Countries That End in RIA | 0 | - | 4.93 | 125,998 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,910 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 224,946 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,418 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,792 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,229 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,864 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,013 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,540 |
