| Island Countries | 0 | - | 4.99 | 711,987 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,355 |
| European Countries by Clue | 0 | - | 4.92 | 184,044 |
| Countries by Military Spending | 0 | - | 4.93 | 178,787 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,196 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,769,586 |
| US States Quiz | 0 | - | 5.00 | 16,966,946 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,646,083 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,272 |
| World Capitals Quiz | 0 | - | 5.00 | 5,098,081 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,651 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,843,728 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,345 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,685 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,931 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,795,260 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,394 |
| All Country Flags of the World | 0 | - | 5.00 | 3,701,670 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,454 |
| Countries that Start with B | 0 | - | 4.95 | 2,303,472 |
| Countries that Start with A | 0 | - | 4.98 | 2,172,477 |
| Countries of Africa | 0 | - | 5.00 | 2,553,869 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,279 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,673 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,340 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,124 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,391 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,134 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,012 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,443 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,953 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,478 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,670 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,131 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,017 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,294 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,048 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,597 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,081 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,113 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,323 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,347 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,307 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,089 |
| Random Country to Capital | 0 | - | 4.98 | 925,958 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,730 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,963 |
| Asia Map Quiz | 0 | - | 4.99 | 923,389 |
| Countries that Start with U | 0 | - | 4.97 | 907,582 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,055 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,265 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,710 |
| Counties of England | 0 | - | 4.97 | 801,506 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,347 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,152 |
| Top World Languages | 0 | - | 4.92 | 827,922 |
| Countries of South America | 0 | - | 5.00 | 930,651 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,432 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,552 |
| Countries that Start with K | 0 | - | 4.97 | 819,553 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,010 |
| US States with an Empty Map | 0 | - | 5.00 | 627,655 |
| Countries that Start with V | 0 | - | 4.98 | 611,350 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,249 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,862 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,511 |
| Countries that Start with D | 0 | - | 4.96 | 714,745 |
| Countries That Border Russia | 0 | - | 4.98 | 464,018 |
| One Border Countries | 0 | - | 4.98 | 471,252 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,045 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,151 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,847 |
| Countries with Four Letters | 0 | - | 4.99 | 425,067 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,033 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,713 |
| Countries Bordering France | 0 | - | 4.83 | 404,447 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,957 |
| Northernmost Countries | 0 | - | 4.99 | 363,335 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,805 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,256 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,423 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,323 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,719 |
| Landlocked Countries | 0 | - | 4.99 | 424,318 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,314 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,695 |
| Australia Map Quiz | 0 | - | 4.95 | 345,850 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,591 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,972 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,920 |
| Countries that Start with H | 0 | - | 4.96 | 608,386 |
| Countries that Start with J | 0 | - | 4.98 | 605,844 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,254 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,589 |
| "Land" Countries | 0 | - | 4.98 | 338,021 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,688 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,952 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,327 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,920 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,679 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,032 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,290 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,074 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,097 |
| Countries with Z | 0 | - | 4.98 | 292,100 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,271 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,728 |
| Flags of North and South America | 0 | - | 4.99 | 376,007 |
| EU Countries Quiz | 0 | - | 4.99 | 277,043 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,821 |
| Countries that Border China | 0 | - | 4.96 | 264,022 |
| French-Speaking Countries | 0 | - | 4.85 | 271,411 |
| Countries with Five Letters | 0 | - | 4.96 | 283,363 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,047 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,579 |
| Every Country Shape | 0 | - | 5.00 | 469,832 |
| Europe Capital to Country | 0 | - | 4.99 | 251,700 |
| Longest International Borders | 0 | - | 4.99 | 265,603 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,012 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,456 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,929 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,347 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,825 |
| Megacities on a World Map | 0 | - | 4.98 | 256,385 |
| World Currency Quiz | 0 | - | 4.92 | 305,878 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,958 |
| NATO Countries | 0 | - | 4.98 | 282,752 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,417 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,524 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,489 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,050 |
| Official Cities in the UK | 0 | - | 4.89 | 285,639 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,135 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,441 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,845 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,841 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,615 |
| Countries with Megacities | 0 | - | 4.99 | 266,287 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,304 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,068 |
| World Capitals by Map | 0 | - | 5.00 | 288,781 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,149 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,802 |
| World's Busiest Airports | 0 | - | 4.96 | 236,497 |
| Country Chain | 0 | - | 4.96 | 218,168 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,553 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,976 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,122 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,440 |
| Independence from Whom | 0 | - | 4.99 | 212,712 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,201 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,647 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,912 |
| Countries with Six Letters | 0 | - | 4.94 | 214,123 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,128 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,602 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,715 |
| Flags of Oceania | 0 | - | 5.00 | 261,975 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,403 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,092 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,098 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,908 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,935 |
| Countries in their Native Language | 0 | - | 4.99 | 199,526 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,116 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,331 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,751 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,269 |
| Monarchies of the World | 0 | - | 4.94 | 169,876 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,079 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,660 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,435 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,851 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,231 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,097 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,483 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,637 |
| Countries That End in Y | 0 | - | 4.91 | 186,020 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,352 |
| Olympic Host Countries | 0 | - | 4.98 | 201,668 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,181 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,095 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,487 |
| Every European Country Shape | 0 | - | 4.96 | 202,658 |
| Countries of the Middle East | 0 | - | 4.96 | 202,328 |
| Countries by Official Language | 0 | - | 4.95 | 195,750 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,454 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,980 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,955 |
| Counties of Ireland | 0 | - | 4.92 | 196,892 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,556 |
| Countries Bordering India | 0 | - | 4.98 | 163,739 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,945 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,086 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,424 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,870 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,372 |
| European Cities by Clue | 0 | - | 4.70 | 89,144 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,210 |
| Islands by Country #2 | 0 | - | 4.80 | 77,767 |
