| Countries With No Rivers | 0 | - | 4.96 | 76,780 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,801 |
| Countries with Fjords | 0 | - | 4.94 | 100,869 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,392 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,006 |
| North Sea Countries | 0 | - | 4.92 | 87,370 |
| Black Sea Countries | 0 | - | 4.87 | 60,592 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,366 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,459 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,213 |
| Megadiverse Countries | 0 | - | 4.96 | 134,850 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,464 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,676 |
| African Great Lakes | 0 | - | 4.82 | 66,191 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,781 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,148 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,173 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,427,370 |
| Capitals by River | 0 | - | 4.55 | 48,307 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,507 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,222 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,737 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,162 |
| Landlocked Countries | 0 | - | 4.99 | 420,051 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,764,792 |
| Countries that Start with A | 0 | - | 4.98 | 2,161,767 |
| Countries that Start with B | 0 | - | 4.95 | 2,293,490 |
| Countries that Start with C | 0 | - | 4.96 | 1,821,334 |
| Countries that Start with D | 0 | - | 4.96 | 709,119 |
| Countries that Start with E | 0 | - | 4.95 | 1,376,607 |
| Countries that Start with G | 0 | - | 4.97 | 1,502,679 |
| Countries that Start with H | 0 | - | 4.96 | 604,383 |
| Countries that Start with I | 0 | - | 4.92 | 1,287,610 |
| Countries that Start with J | 0 | - | 4.98 | 602,095 |
| Countries that Start with K | 0 | - | 4.97 | 815,409 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,264 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,253 |
| Countries that Start with P | 0 | - | 4.94 | 1,215,701 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,211 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,500 |
| Countries that Start with U | 0 | - | 4.97 | 904,226 |
| Countries that Start with V | 0 | - | 4.98 | 609,162 |
| Countries that Start with F | 0 | - | 4.83 | 617,310 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,153 |
| Rivers of the United States | 0 | - | 4.93 | 66,165 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,650 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,649 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,175 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,473 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 412,708 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 135,754 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,037 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,956 |
| Biggest City by River | 0 | - | 4.41 | 52,848 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,929 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,994 |
| Island Countries | 0 | - | 4.99 | 710,220 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,499 |
| Himalayan Countries | 0 | - | 4.95 | 137,913 |
| Andean Countries | 0 | - | 4.95 | 84,175 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,388 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,977 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,040 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,489 |
| Danube Countries | 0 | - | 4.97 | 71,776 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,718 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,175 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,875 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,987 |
| European Landlocked Countries | 0 | - | 4.99 | 146,912 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,305 |
| Countries with the Most Species | 0 | - | 4.99 | 103,047 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,455 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,470 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,639 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,407 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,086 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,474 |
| Countries in the Alps | 0 | - | 4.87 | 117,896 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 97,845 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,617 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,513 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,398 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,244 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,807 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,411 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,293 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,044 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,660 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,549 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,391 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,021 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,312 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,322 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,449 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,141 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,650 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,724 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,955 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,537 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,071 |
| Largest Countries By Category | 0 | - | 4.97 | 157,850 |
| Countries by Countries | 0 | - | 4.97 | 62,962 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,569 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,456 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,387 |
| Northernmost Countries | 0 | - | 4.99 | 361,043 |
| Landforms by Country | 0 | - | 4.52 | 51,968 |
| Countries of South America | 0 | - | 5.00 | 924,525 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,387 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,870,533 |
| "Land" Countries | 0 | - | 4.98 | 336,095 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,241 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,104 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,186 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,367 |
| Countries with Megacities | 0 | - | 4.99 | 262,956 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,197 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,179 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,501 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,218 |
| Countries by Official Language | 0 | - | 4.95 | 194,861 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,838 |
| Countries in their Native Language | 0 | - | 4.99 | 198,402 |
| Independence from Whom | 0 | - | 4.99 | 211,620 |
| Subdivisions by Country | 0 | - | 4.86 | 50,342 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,915 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,734 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,237 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,819 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,052 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,096 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,858 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,457 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,152 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,912 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,546 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,031 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,274 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,780 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,065 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,847 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,365 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,432 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,155 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,718 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,056 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,778 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,670 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,661 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,796 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,936 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,337 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,400 |
| Widest Countries East to West | 0 | - | 4.92 | 129,466 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,410 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,115 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,042 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,607 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,371 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,664 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,292 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,752 |
| Countries with Double Letters | 0 | - | 4.97 | 95,317 |
| Countries that End in N | 0 | - | 4.95 | 170,351 |
| Countries with Five Letters | 0 | - | 4.96 | 281,184 |
| Countries with Six Letters | 0 | - | 4.94 | 212,758 |
| Countries with W | 0 | - | 4.97 | 159,678 |
| Countries with Z | 0 | - | 4.98 | 290,571 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,945 |
| Countries That End in U | 0 | - | 4.95 | 120,501 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,949 |
| Countries that End in O | 0 | - | 4.92 | 159,273 |
| Countries that End in R | 0 | - | 4.87 | 118,795 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,561 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,562 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,295 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,197 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,798 |
| Countries That End in Y | 0 | - | 4.91 | 185,703 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,477 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,574 |
| Countries that End in I | 0 | - | 4.94 | 134,932 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,684 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,654 |
| Countries That End in NIA | 0 | - | 4.92 | 109,603 |
| Countries That End in BIA | 0 | - | 4.93 | 148,959 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,860 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,184 |
| Countries That End in RIA | 0 | - | 4.93 | 126,616 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,751 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,019 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,380 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,766 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,307 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,399 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,773 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,351 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,270 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,682 |
