| Island Countries | 0 | - | 4.99 | 711,832 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,276 |
| European Countries by Clue | 0 | - | 4.92 | 184,018 |
| Countries by Military Spending | 0 | - | 4.93 | 178,741 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,039 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,743,438 |
| US States Quiz | 0 | - | 5.00 | 16,960,047 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,920 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,484 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,752 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,133 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,557 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,091 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,141 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,283 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,024 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,752 |
| All Country Flags of the World | 0 | - | 5.00 | 3,698,524 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,612 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,667 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,590 |
| Countries of Africa | 0 | - | 5.00 | 2,552,419 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,005 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,095 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,001 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,516 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,159 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,597 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,449 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,611 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,827 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,912 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,227 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,597 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,486 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,152 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,624 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,205 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,631 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,835 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,924 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,485 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,890 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,927 |
| Random Country to Capital | 0 | - | 4.98 | 925,464 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,427 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,426 |
| Asia Map Quiz | 0 | - | 4.99 | 922,855 |
| Countries that Start with U | 0 | - | 4.97 | 907,339 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,499 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,749 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,495 |
| Counties of England | 0 | - | 4.97 | 801,124 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,071 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,782 |
| Top World Languages | 0 | - | 4.92 | 827,415 |
| Countries of South America | 0 | - | 5.00 | 930,135 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,050 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,103 |
| Countries that Start with K | 0 | - | 4.97 | 819,220 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,880 |
| US States with an Empty Map | 0 | - | 5.00 | 627,411 |
| Countries that Start with V | 0 | - | 4.98 | 611,162 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,061 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,785 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,115 |
| Countries that Start with D | 0 | - | 4.96 | 714,320 |
| Countries That Border Russia | 0 | - | 4.98 | 463,861 |
| One Border Countries | 0 | - | 4.98 | 471,050 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,951 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,880 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,640 |
| Countries with Four Letters | 0 | - | 4.99 | 424,863 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,897 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,529 |
| Countries Bordering France | 0 | - | 4.83 | 404,320 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,777 |
| Northernmost Countries | 0 | - | 4.99 | 363,151 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,685 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,152 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,299 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,215 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,649 |
| Landlocked Countries | 0 | - | 4.99 | 423,972 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,125 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,586 |
| Australia Map Quiz | 0 | - | 4.95 | 345,727 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,479 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,803 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,683 |
| Countries that Start with H | 0 | - | 4.96 | 608,051 |
| Countries that Start with J | 0 | - | 4.98 | 605,544 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,092 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,474 |
| "Land" Countries | 0 | - | 4.98 | 337,913 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,636 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,893 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,079 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,828 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,587 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,607 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,137 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,017 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,858 |
| Countries with Z | 0 | - | 4.98 | 292,007 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,158 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,636 |
| Flags of North and South America | 0 | - | 4.99 | 375,803 |
| EU Countries Quiz | 0 | - | 4.99 | 276,792 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,693 |
| Countries that Border China | 0 | - | 4.96 | 263,946 |
| French-Speaking Countries | 0 | - | 4.85 | 271,339 |
| Countries with Five Letters | 0 | - | 4.96 | 283,247 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,002 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,355 |
| Every Country Shape | 0 | - | 5.00 | 469,462 |
| Europe Capital to Country | 0 | - | 4.99 | 251,568 |
| Longest International Borders | 0 | - | 4.99 | 265,543 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,768 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,396 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,368 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,290 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,749 |
| Megacities on a World Map | 0 | - | 4.98 | 256,191 |
| World Currency Quiz | 0 | - | 4.92 | 305,602 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,787 |
| NATO Countries | 0 | - | 4.98 | 282,564 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,376 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,391 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,417 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,960 |
| Official Cities in the UK | 0 | - | 4.89 | 285,460 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,041 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,393 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,766 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,769 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,553 |
| Countries with Megacities | 0 | - | 4.99 | 265,932 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,242 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,964 |
| World Capitals by Map | 0 | - | 5.00 | 288,579 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,105 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,745 |
| World's Busiest Airports | 0 | - | 4.96 | 236,255 |
| Country Chain | 0 | - | 4.96 | 218,026 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,456 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,751 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,036 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,394 |
| Independence from Whom | 0 | - | 4.99 | 212,616 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,141 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,571 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,877 |
| Countries with Six Letters | 0 | - | 4.94 | 214,049 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,091 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,571 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,603 |
| Flags of Oceania | 0 | - | 5.00 | 261,783 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,312 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,032 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,059 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,865 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,782 |
| Countries in their Native Language | 0 | - | 4.99 | 199,443 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,030 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,234 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,721 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,214 |
| Monarchies of the World | 0 | - | 4.94 | 169,768 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,027 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,595 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,396 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,818 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,141 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,068 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,414 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,463 |
| Countries That End in Y | 0 | - | 4.91 | 186,005 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,228 |
| Olympic Host Countries | 0 | - | 4.98 | 201,574 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,022 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,036 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,446 |
| Every European Country Shape | 0 | - | 4.96 | 202,581 |
| Countries of the Middle East | 0 | - | 4.96 | 202,231 |
| Countries by Official Language | 0 | - | 4.95 | 195,673 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,335 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,934 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,931 |
| Counties of Ireland | 0 | - | 4.92 | 196,802 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,490 |
| Countries Bordering India | 0 | - | 4.98 | 163,711 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,913 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,065 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,385 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,833 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,354 |
| European Cities by Clue | 0 | - | 4.70 | 89,136 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,148 |
| Islands by Country #2 | 0 | - | 4.80 | 77,719 |
