| Island Countries | 0 | - | 4.99 | 711,347 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,028 |
| European Countries by Clue | 0 | - | 4.92 | 183,897 |
| Countries by Military Spending | 0 | - | 4.93 | 178,541 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,491 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,649,536 |
| US States Quiz | 0 | - | 5.00 | 16,933,063 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,637,196 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,859 |
| World Capitals Quiz | 0 | - | 5.00 | 5,088,488 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,473 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,996 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,778 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,541,228 |
| Random Capital to Country | 0 | - | 4.99 | 2,596,049 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,664 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,083 |
| All Country Flags of the World | 0 | - | 5.00 | 3,686,694 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,107,092 |
| Countries that Start with B | 0 | - | 4.95 | 2,299,685 |
| Countries that Start with A | 0 | - | 4.98 | 2,168,523 |
| Countries of Africa | 0 | - | 5.00 | 2,547,696 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,079 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,104 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,453 |
| Countries that Start with C | 0 | - | 4.96 | 1,826,329 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,300 |
| Countries that Start with S | 0 | - | 4.98 | 1,758,659 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,566 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,592,713 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,914 |
| Countries that Start with G | 0 | - | 4.97 | 1,507,014 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,727 |
| Countries that Start with E | 0 | - | 4.95 | 1,380,752 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,748 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,180 |
| Countries that Start with I | 0 | - | 4.92 | 1,291,143 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,855 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,949 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,827 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,523 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,370 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,470 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,368 |
| Random Country to Capital | 0 | - | 4.98 | 923,795 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,896 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,198 |
| Asia Map Quiz | 0 | - | 4.99 | 920,661 |
| Countries that Start with U | 0 | - | 4.97 | 906,131 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,404 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,883 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,775 |
| Counties of England | 0 | - | 4.97 | 799,804 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,204 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,812 |
| Top World Languages | 0 | - | 4.92 | 825,609 |
| Countries of South America | 0 | - | 5.00 | 928,559 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,660 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,540 |
| Countries that Start with K | 0 | - | 4.97 | 818,048 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,464 |
| US States with an Empty Map | 0 | - | 5.00 | 626,470 |
| Countries that Start with V | 0 | - | 4.98 | 610,510 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,275 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,532 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,752 |
| Countries that Start with D | 0 | - | 4.96 | 712,732 |
| Countries That Border Russia | 0 | - | 4.98 | 463,113 |
| One Border Countries | 0 | - | 4.98 | 470,347 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,580 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,115 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,848 |
| Countries with Four Letters | 0 | - | 4.99 | 423,778 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,411 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,916 |
| Countries Bordering France | 0 | - | 4.83 | 403,838 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,313 |
| Northernmost Countries | 0 | - | 4.99 | 362,378 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,310 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,769 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,920 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,935 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,349 |
| Landlocked Countries | 0 | - | 4.99 | 422,824 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,517 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,203 |
| Australia Map Quiz | 0 | - | 4.95 | 345,401 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,025 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,198 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,017 |
| Countries that Start with H | 0 | - | 4.96 | 606,917 |
| Countries that Start with J | 0 | - | 4.98 | 604,464 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,486 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,163 |
| "Land" Countries | 0 | - | 4.98 | 337,584 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,427 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,608 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,208 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,587 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,279 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,134 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,698 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,831 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,067 |
| Countries with Z | 0 | - | 4.98 | 291,675 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,616 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,390 |
| Flags of North and South America | 0 | - | 4.99 | 374,842 |
| EU Countries Quiz | 0 | - | 4.99 | 276,027 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,272 |
| Countries that Border China | 0 | - | 4.96 | 263,683 |
| French-Speaking Countries | 0 | - | 4.85 | 271,057 |
| Countries with Five Letters | 0 | - | 4.96 | 282,828 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,588 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,730 |
| Every Country Shape | 0 | - | 5.00 | 468,348 |
| Europe Capital to Country | 0 | - | 4.99 | 251,142 |
| Longest International Borders | 0 | - | 4.99 | 265,344 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,974 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,146 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,365 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,048 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,483 |
| Megacities on a World Map | 0 | - | 4.98 | 255,670 |
| World Currency Quiz | 0 | - | 4.92 | 304,760 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,270 |
| NATO Countries | 0 | - | 4.98 | 281,936 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,211 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,013 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,158 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,664 |
| Official Cities in the UK | 0 | - | 4.89 | 284,885 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,708 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,207 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,504 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,526 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,376 |
| Countries with Megacities | 0 | - | 4.99 | 265,173 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,955 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,531 |
| World Capitals by Map | 0 | - | 5.00 | 287,867 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,977 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,584 |
| World's Busiest Airports | 0 | - | 4.96 | 235,448 |
| Country Chain | 0 | - | 4.96 | 217,776 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,098 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,188 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,555 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,173 |
| Independence from Whom | 0 | - | 4.99 | 212,297 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,913 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,348 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,730 |
| Countries with Six Letters | 0 | - | 4.94 | 213,765 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,972 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,460 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,217 |
| Flags of Oceania | 0 | - | 5.00 | 260,976 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,003 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,838 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,921 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,694 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,171 |
| Countries in their Native Language | 0 | - | 4.99 | 199,208 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,465 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,963 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,611 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,033 |
| Monarchies of the World | 0 | - | 4.94 | 169,447 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,831 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,919 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,054 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,656 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,839 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,986 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,218 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,886 |
| Countries That End in Y | 0 | - | 4.91 | 185,929 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,967 |
| Olympic Host Countries | 0 | - | 4.98 | 201,271 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,487 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,812 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,289 |
| Every European Country Shape | 0 | - | 4.96 | 202,360 |
| Countries of the Middle East | 0 | - | 4.96 | 201,872 |
| Countries by Official Language | 0 | - | 4.95 | 195,432 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,205 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,777 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,847 |
| Counties of Ireland | 0 | - | 4.92 | 196,301 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,287 |
| Countries Bordering India | 0 | - | 4.98 | 163,616 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,801 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,008 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,239 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,740 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,278 |
| European Cities by Clue | 0 | - | 4.70 | 89,108 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,013 |
| Islands by Country #2 | 0 | - | 4.80 | 77,621 |
