| Island Countries | 0 | - | 4.99 | 712,106 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,402 |
| European Countries by Clue | 0 | - | 4.92 | 184,057 |
| Countries by Military Spending | 0 | - | 4.93 | 178,846 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,281 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,785,427 |
| US States Quiz | 0 | - | 5.00 | 16,971,275 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,256 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,818 |
| World Capitals Quiz | 0 | - | 5.00 | 5,099,381 |
| Europe Map Quiz | 0 | - | 5.00 | 4,782,504 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,512 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,874 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,544,006 |
| Random Capital to Country | 0 | - | 4.99 | 2,599,308 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,590 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,731 |
| All Country Flags of the World | 0 | - | 5.00 | 3,703,579 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,111,039 |
| Countries that Start with B | 0 | - | 4.95 | 2,304,006 |
| Countries that Start with A | 0 | - | 4.98 | 2,173,003 |
| Countries of Africa | 0 | - | 5.00 | 2,554,831 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,428 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,697,083 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,827 |
| Countries that Start with C | 0 | - | 4.96 | 1,829,552 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,562 |
| Countries that Start with S | 0 | - | 4.98 | 1,761,447 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,357 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,927 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,591 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,822 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,936 |
| Countries that Start with E | 0 | - | 4.95 | 1,383,477 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,334,204 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 904,464 |
| Countries that Start with I | 0 | - | 4.92 | 1,293,305 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,853 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,349 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,280 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,585 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,858 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,550 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,189 |
| Random Country to Capital | 0 | - | 4.98 | 926,393 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,934 |
| Biggest Cities in the United States | 0 | - | 4.94 | 985,352 |
| Asia Map Quiz | 0 | - | 4.99 | 923,705 |
| Countries that Start with U | 0 | - | 4.97 | 907,733 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,366 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,629 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,840 |
| Counties of England | 0 | - | 4.97 | 801,722 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,502 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,381 |
| Top World Languages | 0 | - | 4.92 | 828,256 |
| Countries of South America | 0 | - | 5.00 | 930,977 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,706 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,739 |
| Countries that Start with K | 0 | - | 4.97 | 819,777 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,089 |
| US States with an Empty Map | 0 | - | 5.00 | 627,812 |
| Countries that Start with V | 0 | - | 4.98 | 611,456 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,406 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,911 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,754 |
| Countries that Start with D | 0 | - | 4.96 | 715,033 |
| Countries That Border Russia | 0 | - | 4.98 | 464,103 |
| One Border Countries | 0 | - | 4.98 | 471,358 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,098 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,277 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,005 |
| Countries with Four Letters | 0 | - | 4.99 | 425,179 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,130 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,823 |
| Countries Bordering France | 0 | - | 4.83 | 404,529 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,035 |
| Northernmost Countries | 0 | - | 4.99 | 363,429 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,888 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,322 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,490 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,391 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,753 |
| Landlocked Countries | 0 | - | 4.99 | 424,584 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,409 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,765 |
| Australia Map Quiz | 0 | - | 4.95 | 345,896 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,679 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,098 |
| Majority Muslim Countries | 0 | - | 4.98 | 377,052 |
| Countries that Start with H | 0 | - | 4.96 | 608,601 |
| Countries that Start with J | 0 | - | 4.98 | 606,041 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,346 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,647 |
| "Land" Countries | 0 | - | 4.98 | 338,077 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,728 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,001 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,477 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,969 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,736 |
| Flags of Africa Quiz | 0 | - | 5.00 | 476,236 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,331 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 238,108 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,215 |
| Countries with Z | 0 | - | 4.98 | 292,152 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,323 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,793 |
| Flags of North and South America | 0 | - | 4.99 | 376,179 |
| EU Countries Quiz | 0 | - | 4.99 | 277,150 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,882 |
| Countries that Border China | 0 | - | 4.96 | 264,071 |
| French-Speaking Countries | 0 | - | 4.85 | 271,454 |
| Countries with Five Letters | 0 | - | 4.96 | 283,414 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,071 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,783 |
| Every Country Shape | 0 | - | 5.00 | 470,052 |
| Europe Capital to Country | 0 | - | 4.99 | 251,765 |
| Longest International Borders | 0 | - | 4.99 | 265,637 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,221 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,479 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,501 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,382 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,867 |
| Megacities on a World Map | 0 | - | 4.98 | 256,489 |
| World Currency Quiz | 0 | - | 4.92 | 306,040 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,014 |
| NATO Countries | 0 | - | 4.98 | 282,886 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,448 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,590 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,522 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,114 |
| Official Cities in the UK | 0 | - | 4.89 | 285,761 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,200 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,460 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,905 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,907 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,644 |
| Countries with Megacities | 0 | - | 4.99 | 266,456 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,347 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,115 |
| World Capitals by Map | 0 | - | 5.00 | 288,898 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 192,168 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,835 |
| World's Busiest Airports | 0 | - | 4.96 | 236,659 |
| Country Chain | 0 | - | 4.96 | 218,236 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,651 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,079 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,160 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,473 |
| Independence from Whom | 0 | - | 4.99 | 212,788 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,243 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,683 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,930 |
| Countries with Six Letters | 0 | - | 4.94 | 214,187 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,157 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,619 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,774 |
| Flags of Oceania | 0 | - | 5.00 | 262,088 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,468 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,137 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,123 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,956 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,044 |
| Countries in their Native Language | 0 | - | 4.99 | 199,565 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,165 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,397 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,762 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,310 |
| Monarchies of the World | 0 | - | 4.94 | 169,929 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,113 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,702 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,474 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,873 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,309 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,118 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,517 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,722 |
| Countries That End in Y | 0 | - | 4.91 | 186,032 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,418 |
| Olympic Host Countries | 0 | - | 4.98 | 201,718 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,256 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,119 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,514 |
| Every European Country Shape | 0 | - | 4.96 | 202,722 |
| Countries of the Middle East | 0 | - | 4.96 | 202,374 |
| Countries by Official Language | 0 | - | 4.95 | 195,782 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,692 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,018 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,975 |
| Counties of Ireland | 0 | - | 4.92 | 196,934 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,586 |
| Countries Bordering India | 0 | - | 4.98 | 163,751 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,970 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,107 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,452 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,891 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,389 |
| European Cities by Clue | 0 | - | 4.70 | 89,148 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,373 |
| Islands by Country #2 | 0 | - | 4.80 | 77,790 |
