| Island Countries | 0 | - | 4.99 | 710,960 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,790 |
| European Countries by Clue | 0 | - | 4.92 | 183,782 |
| Countries by Military Spending | 0 | - | 4.93 | 178,304 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,049 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,564,678 |
| US States Quiz | 0 | - | 5.00 | 16,908,736 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,631,017 |
| United States Map Quiz | 0 | - | 4.98 | 4,162,589 |
| World Capitals Quiz | 0 | - | 5.00 | 5,081,937 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,204 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,833,991 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,102 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,429 |
| Random Capital to Country | 0 | - | 4.99 | 2,593,980 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,777,135 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,013 |
| All Country Flags of the World | 0 | - | 5.00 | 3,676,820 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,104,693 |
| Countries that Start with B | 0 | - | 4.95 | 2,297,313 |
| Countries that Start with A | 0 | - | 4.98 | 2,165,842 |
| Countries of Africa | 0 | - | 5.00 | 2,543,221 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,392 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,692,199 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,323 |
| Countries that Start with C | 0 | - | 4.96 | 1,824,427 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,531 |
| Countries that Start with S | 0 | - | 4.98 | 1,756,978 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,791 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,589,991 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,876,593 |
| Countries that Start with G | 0 | - | 4.97 | 1,505,416 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,371 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,170 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,331 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,798 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,867 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,690 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,563 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,993 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,246 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,578 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,237 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,908 |
| Random Country to Capital | 0 | - | 4.98 | 922,388 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,014 |
| Biggest Cities in the United States | 0 | - | 4.94 | 980,581 |
| Asia Map Quiz | 0 | - | 4.99 | 918,955 |
| Countries that Start with U | 0 | - | 4.97 | 905,458 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,504 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,307 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,195 |
| Counties of England | 0 | - | 4.97 | 798,492 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,399 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,568 |
| Top World Languages | 0 | - | 4.92 | 823,941 |
| Countries of South America | 0 | - | 5.00 | 927,092 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,291 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,351 |
| Countries that Start with K | 0 | - | 4.97 | 817,078 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,018 |
| US States with an Empty Map | 0 | - | 5.00 | 625,717 |
| Countries that Start with V | 0 | - | 4.98 | 609,992 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,584 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,332 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,444 |
| Countries that Start with D | 0 | - | 4.96 | 711,349 |
| Countries That Border Russia | 0 | - | 4.98 | 462,640 |
| One Border Countries | 0 | - | 4.98 | 469,744 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,282 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,286 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,050 |
| Countries with Four Letters | 0 | - | 4.99 | 423,188 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,995 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,427 |
| Countries Bordering France | 0 | - | 4.83 | 403,364 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,875 |
| Northernmost Countries | 0 | - | 4.99 | 361,845 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,921 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,441 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,462 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,525 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,082 |
| Landlocked Countries | 0 | - | 4.99 | 421,729 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,820 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,889 |
| Australia Map Quiz | 0 | - | 4.95 | 344,981 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,656 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,558 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,358 |
| Countries that Start with H | 0 | - | 4.96 | 605,947 |
| Countries that Start with J | 0 | - | 4.98 | 603,569 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,991 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,866 |
| "Land" Countries | 0 | - | 4.98 | 337,268 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,237 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,324 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,453 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,364 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,024 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,730 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,115 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,635 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,379 |
| Countries with Z | 0 | - | 4.98 | 291,377 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,300 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,131 |
| Flags of North and South America | 0 | - | 4.99 | 374,037 |
| EU Countries Quiz | 0 | - | 4.99 | 275,326 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,887 |
| Countries that Border China | 0 | - | 4.96 | 263,475 |
| French-Speaking Countries | 0 | - | 4.85 | 270,803 |
| Countries with Five Letters | 0 | - | 4.96 | 282,328 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,413 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,163 |
| Every Country Shape | 0 | - | 5.00 | 467,165 |
| Europe Capital to Country | 0 | - | 4.99 | 250,770 |
| Longest International Borders | 0 | - | 4.99 | 265,169 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,243 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,906 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,382 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,746 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,214 |
| Megacities on a World Map | 0 | - | 4.98 | 255,207 |
| World Currency Quiz | 0 | - | 4.92 | 303,981 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,040 |
| NATO Countries | 0 | - | 4.98 | 281,393 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,081 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,699 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,919 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,223 |
| Official Cities in the UK | 0 | - | 4.89 | 284,373 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,429 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,101 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,289 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,301 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,185 |
| Countries with Megacities | 0 | - | 4.99 | 264,412 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,687 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,251 |
| World Capitals by Map | 0 | - | 5.00 | 287,283 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,849 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,391 |
| World's Busiest Airports | 0 | - | 4.96 | 234,649 |
| Country Chain | 0 | - | 4.96 | 217,349 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,747 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,678 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,259 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,992 |
| Independence from Whom | 0 | - | 4.99 | 212,039 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,693 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,031 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,619 |
| Countries with Six Letters | 0 | - | 4.94 | 213,486 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,895 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,371 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,946 |
| Flags of Oceania | 0 | - | 5.00 | 260,280 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,723 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,644 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,797 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,532 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,600 |
| Countries in their Native Language | 0 | - | 4.99 | 198,999 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,278 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,719 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,493 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,869 |
| Monarchies of the World | 0 | - | 4.94 | 169,148 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,646 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,706 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,914 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,485 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,524 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,923 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,059 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,441 |
| Countries That End in Y | 0 | - | 4.91 | 185,857 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,732 |
| Olympic Host Countries | 0 | - | 4.98 | 201,053 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,131 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,617 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,150 |
| Every European Country Shape | 0 | - | 4.96 | 202,117 |
| Countries of the Middle East | 0 | - | 4.96 | 201,565 |
| Countries by Official Language | 0 | - | 4.95 | 195,208 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,087 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,616 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,739 |
| Counties of Ireland | 0 | - | 4.92 | 195,901 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,120 |
| Countries Bordering India | 0 | - | 4.98 | 163,534 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,723 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,949 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,094 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,657 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,223 |
| European Cities by Clue | 0 | - | 4.70 | 89,088 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,234 |
| Islands by Country #2 | 0 | - | 4.80 | 77,522 |
