| Island Countries | 0 | - | 4.99 | 711,817 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,269 |
| European Countries by Clue | 0 | - | 4.92 | 184,012 |
| Countries by Military Spending | 0 | - | 4.93 | 178,738 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,023 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,740,846 |
| US States Quiz | 0 | - | 5.00 | 16,959,463 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,701 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,428 |
| World Capitals Quiz | 0 | - | 5.00 | 5,095,507 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,016 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,441 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,900 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,108 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,231 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,850 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,707 |
| All Country Flags of the World | 0 | - | 5.00 | 3,698,223 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,516 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,586 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,513 |
| Countries of Africa | 0 | - | 5.00 | 2,552,330 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,994 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,032 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,981 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,463 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,140 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,544 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,398 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,537 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,737 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,858 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,189 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,545 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,454 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,146 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,593 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,173 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,580 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,813 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,889 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,393 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,845 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,915 |
| Random Country to Capital | 0 | - | 4.98 | 925,434 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,399 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,385 |
| Asia Map Quiz | 0 | - | 4.99 | 922,822 |
| Countries that Start with U | 0 | - | 4.97 | 907,312 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,460 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,717 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,475 |
| Counties of England | 0 | - | 4.97 | 801,088 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,042 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,760 |
| Top World Languages | 0 | - | 4.92 | 827,368 |
| Countries of South America | 0 | - | 5.00 | 930,094 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,032 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,043 |
| Countries that Start with K | 0 | - | 4.97 | 819,195 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,865 |
| US States with an Empty Map | 0 | - | 5.00 | 627,390 |
| Countries that Start with V | 0 | - | 4.98 | 611,146 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,048 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,779 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,053 |
| Countries that Start with D | 0 | - | 4.96 | 714,272 |
| Countries That Border Russia | 0 | - | 4.98 | 463,855 |
| One Border Countries | 0 | - | 4.98 | 471,025 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,936 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,862 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,622 |
| Countries with Four Letters | 0 | - | 4.99 | 424,843 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,880 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,508 |
| Countries Bordering France | 0 | - | 4.83 | 404,310 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,768 |
| Northernmost Countries | 0 | - | 4.99 | 363,132 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,675 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,141 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,292 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,209 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,646 |
| Landlocked Countries | 0 | - | 4.99 | 423,938 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,112 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,576 |
| Australia Map Quiz | 0 | - | 4.95 | 345,722 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,469 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,786 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,660 |
| Countries that Start with H | 0 | - | 4.96 | 608,029 |
| Countries that Start with J | 0 | - | 4.98 | 605,518 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,075 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,462 |
| "Land" Countries | 0 | - | 4.98 | 337,909 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,630 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,880 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,058 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,823 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,580 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,575 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,131 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,013 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,843 |
| Countries with Z | 0 | - | 4.98 | 291,995 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,151 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,630 |
| Flags of North and South America | 0 | - | 4.99 | 375,782 |
| EU Countries Quiz | 0 | - | 4.99 | 276,777 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,683 |
| Countries that Border China | 0 | - | 4.96 | 263,939 |
| French-Speaking Countries | 0 | - | 4.85 | 271,332 |
| Countries with Five Letters | 0 | - | 4.96 | 283,240 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,000 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,338 |
| Every Country Shape | 0 | - | 5.00 | 469,431 |
| Europe Capital to Country | 0 | - | 4.99 | 251,554 |
| Longest International Borders | 0 | - | 4.99 | 265,540 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,750 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,389 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,334 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,287 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,743 |
| Megacities on a World Map | 0 | - | 4.98 | 256,179 |
| World Currency Quiz | 0 | - | 4.92 | 305,587 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,748 |
| NATO Countries | 0 | - | 4.98 | 282,549 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,369 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,385 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,413 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,953 |
| Official Cities in the UK | 0 | - | 4.89 | 285,446 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,037 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,390 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,758 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,766 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,552 |
| Countries with Megacities | 0 | - | 4.99 | 265,916 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,237 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,956 |
| World Capitals by Map | 0 | - | 5.00 | 288,564 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,100 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,744 |
| World's Busiest Airports | 0 | - | 4.96 | 236,238 |
| Country Chain | 0 | - | 4.96 | 218,007 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,444 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,741 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,029 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,387 |
| Independence from Whom | 0 | - | 4.99 | 212,602 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,134 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,568 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,870 |
| Countries with Six Letters | 0 | - | 4.94 | 214,039 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,090 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,565 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,589 |
| Flags of Oceania | 0 | - | 5.00 | 261,759 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,302 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,027 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,057 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,862 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,770 |
| Countries in their Native Language | 0 | - | 4.99 | 199,436 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,018 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,226 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,718 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,207 |
| Monarchies of the World | 0 | - | 4.94 | 169,757 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,022 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,587 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,395 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,817 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,135 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,065 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,408 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,458 |
| Countries That End in Y | 0 | - | 4.91 | 186,003 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,215 |
| Olympic Host Countries | 0 | - | 4.98 | 201,568 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,005 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,031 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,441 |
| Every European Country Shape | 0 | - | 4.96 | 202,574 |
| Countries of the Middle East | 0 | - | 4.96 | 202,228 |
| Countries by Official Language | 0 | - | 4.95 | 195,666 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,332 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,931 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,929 |
| Counties of Ireland | 0 | - | 4.92 | 196,780 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,486 |
| Countries Bordering India | 0 | - | 4.98 | 163,709 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,910 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,064 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,382 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,831 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,351 |
| European Cities by Clue | 0 | - | 4.70 | 89,134 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,146 |
| Islands by Country #2 | 0 | - | 4.80 | 77,714 |
