| Island Countries | 0 | - | 4.99 | 711,873 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,292 |
| European Countries by Clue | 0 | - | 4.92 | 184,026 |
| Countries by Military Spending | 0 | - | 4.93 | 178,747 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,075 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,749,978 |
| US States Quiz | 0 | - | 5.00 | 16,961,648 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,527 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,715 |
| World Capitals Quiz | 0 | - | 5.00 | 5,096,313 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,556 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,843 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,356 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,253 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,434 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,533 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,897 |
| All Country Flags of the World | 0 | - | 5.00 | 3,699,264 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,837 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,865 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,786 |
| Countries of Africa | 0 | - | 5.00 | 2,552,806 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,061 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,325 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,063 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,668 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,204 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,728 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,588 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,809 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,076 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,034 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,341 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,736 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,608 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,179 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,730 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,299 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,749 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,896 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,028 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,691 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,998 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,957 |
| Random Country to Capital | 0 | - | 4.98 | 925,602 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,498 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,563 |
| Asia Map Quiz | 0 | - | 4.99 | 922,984 |
| Countries that Start with U | 0 | - | 4.97 | 907,395 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,618 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,891 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,546 |
| Counties of England | 0 | - | 4.97 | 801,234 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,144 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,862 |
| Top World Languages | 0 | - | 4.92 | 827,543 |
| Countries of South America | 0 | - | 5.00 | 930,260 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,133 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,210 |
| Countries that Start with K | 0 | - | 4.97 | 819,296 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,909 |
| US States with an Empty Map | 0 | - | 5.00 | 627,475 |
| Countries that Start with V | 0 | - | 4.98 | 611,205 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,118 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,804 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,201 |
| Countries that Start with D | 0 | - | 4.96 | 714,423 |
| Countries That Border Russia | 0 | - | 4.98 | 463,894 |
| One Border Countries | 0 | - | 4.98 | 471,088 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,963 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,924 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,681 |
| Countries with Four Letters | 0 | - | 4.99 | 424,918 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,933 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,581 |
| Countries Bordering France | 0 | - | 4.83 | 404,343 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,823 |
| Northernmost Countries | 0 | - | 4.99 | 363,209 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,703 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,178 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,322 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,255 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,658 |
| Landlocked Countries | 0 | - | 4.99 | 424,067 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,165 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,613 |
| Australia Map Quiz | 0 | - | 4.95 | 345,754 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,521 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,838 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,743 |
| Countries that Start with H | 0 | - | 4.96 | 608,138 |
| Countries that Start with J | 0 | - | 4.98 | 605,620 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,143 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,505 |
| "Land" Countries | 0 | - | 4.98 | 337,948 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,649 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,905 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,132 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,849 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,603 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,707 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,174 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,028 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,915 |
| Countries with Z | 0 | - | 4.98 | 292,025 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,184 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,651 |
| Flags of North and South America | 0 | - | 4.99 | 375,852 |
| EU Countries Quiz | 0 | - | 4.99 | 276,854 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,715 |
| Countries that Border China | 0 | - | 4.96 | 263,966 |
| French-Speaking Countries | 0 | - | 4.85 | 271,354 |
| Countries with Five Letters | 0 | - | 4.96 | 283,278 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,009 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,396 |
| Every Country Shape | 0 | - | 5.00 | 469,544 |
| Europe Capital to Country | 0 | - | 4.99 | 251,602 |
| Longest International Borders | 0 | - | 4.99 | 265,554 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,819 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,409 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,462 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,304 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,766 |
| Megacities on a World Map | 0 | - | 4.98 | 256,226 |
| World Currency Quiz | 0 | - | 4.92 | 305,669 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,888 |
| NATO Countries | 0 | - | 4.98 | 282,603 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,388 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,425 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,430 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,991 |
| Official Cities in the UK | 0 | - | 4.89 | 285,491 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,068 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,398 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,792 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,791 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,566 |
| Countries with Megacities | 0 | - | 4.99 | 265,996 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,257 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,985 |
| World Capitals by Map | 0 | - | 5.00 | 288,639 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,118 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,758 |
| World's Busiest Airports | 0 | - | 4.96 | 236,304 |
| Country Chain | 0 | - | 4.96 | 218,066 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,477 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,771 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,058 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,401 |
| Independence from Whom | 0 | - | 4.99 | 212,643 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,153 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,583 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,883 |
| Countries with Six Letters | 0 | - | 4.94 | 214,067 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,103 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,577 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,629 |
| Flags of Oceania | 0 | - | 5.00 | 261,814 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,333 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,046 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,070 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,874 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,821 |
| Countries in their Native Language | 0 | - | 4.99 | 199,462 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,049 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,256 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,727 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,227 |
| Monarchies of the World | 0 | - | 4.94 | 169,783 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,043 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,613 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,403 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,827 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,158 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,077 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,431 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,509 |
| Countries That End in Y | 0 | - | 4.91 | 186,010 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,243 |
| Olympic Host Countries | 0 | - | 4.98 | 201,581 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,074 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,053 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,451 |
| Every European Country Shape | 0 | - | 4.96 | 202,605 |
| Countries of the Middle East | 0 | - | 4.96 | 202,254 |
| Countries by Official Language | 0 | - | 4.95 | 195,686 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,344 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,945 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,936 |
| Counties of Ireland | 0 | - | 4.92 | 196,825 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,505 |
| Countries Bordering India | 0 | - | 4.98 | 163,715 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,919 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,070 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,394 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,838 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,359 |
| European Cities by Clue | 0 | - | 4.70 | 89,137 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,153 |
| Islands by Country #2 | 0 | - | 4.80 | 77,736 |
