| Island Countries Quiz | 0 | - | 4.99 | 669,334 |
| Countries by Clue #1 | 0 | - | 4.93 | 223,589 |
| European Countries by Clue | 0 | - | 4.94 | 173,320 |
| Countries by Military Spending | 0 | - | 4.93 | 162,137 |
| Countries by Clue #2 | 0 | - | 4.92 | 150,545 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,830,648 |
| US States Quiz | 0 | - | 5.00 | 15,022,956 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,180,920 |
| United States Map Quiz | 0 | - | 4.98 | 3,936,392 |
| World Capitals Quiz | 0 | - | 5.00 | 4,583,644 |
| Europe Map Quiz | 0 | - | 5.00 | 4,357,529 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,475,368 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,121,414 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,392,087 |
| Random Capital to Country | 0 | - | 4.99 | 2,399,238 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,234,893 |
| Africa Map Quiz | 0 | - | 5.00 | 1,963,587 |
| All Country Flags of the World | 0 | - | 5.00 | 3,063,886 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,950,854 |
| Countries that Start with B | 0 | - | 4.95 | 2,117,502 |
| Countries that Start with A | 0 | - | 4.98 | 1,978,402 |
| Countries of Africa | 0 | - | 5.00 | 2,219,960 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,356,859 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,550,375 |
| South America Map Quiz | 0 | - | 5.00 | 1,438,229 |
| Countries that Start with C | 0 | - | 4.96 | 1,676,155 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,294,603 |
| Countries that Start with S | 0 | - | 4.98 | 1,629,551 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,285 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,410,795 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,614,650 |
| Countries that Start with G | 0 | - | 4.97 | 1,375,660 |
| Countries that Start with M | 0 | - | 4.97 | 1,274,564 |
| Countries that Start with E | 0 | - | 4.95 | 1,255,674 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,210,696 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 859,891 |
| Countries that Start with I | 0 | - | 4.92 | 1,183,268 |
| Countries that Start with P | 0 | - | 4.95 | 1,119,717 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,790 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,016,375 |
| Countries that Start with N | 0 | - | 4.93 | 1,017,276 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,068,465 |
| Countries that Start with L | 0 | - | 4.98 | 990,949 |
| Country Shape Quiz #1 | 0 | - | 4.91 | 846,561 |
| Random Country to Capital | 0 | - | 4.98 | 816,227 |
| Countries that Start with T | 0 | - | 4.89 | 928,065 |
| Biggest Cities in the United States | 0 | - | 4.93 | 850,255 |
| Asia Map Quiz | 0 | - | 4.99 | 802,101 |
| Countries that Start with U | 0 | - | 4.97 | 836,093 |
| Countries of Oceania | 0 | - | 5.00 | 915,331 |
| Countries of North America Quiz | 0 | - | 5.00 | 898,938 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 681,083 |
| Counties of England | 0 | - | 4.97 | 705,915 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 591,594 |
| Oceania Map Quiz | 0 | - | 4.98 | 577,761 |
| Top World Languages | 0 | - | 4.92 | 724,691 |
| Countries of South America | 0 | - | 5.00 | 811,429 |
| Africa Capitals Quiz | 0 | - | 4.99 | 650,792 |
| Asia Capitals Quiz | 0 | - | 4.98 | 608,035 |
| Countries that Start with K | 0 | - | 4.96 | 730,546 |
| UK Cities Map Quiz | 0 | - | 4.95 | 438,477 |
| US States with an Empty Map | 0 | - | 5.00 | 563,778 |
| Countries that Start with V | 0 | - | 4.98 | 559,790 |
| Word Scramble - U.S. States | 0 | - | 4.96 | 464,998 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 393,371 |
| Flags of Asia Quiz | 0 | - | 4.99 | 535,754 |
| Countries that Start with D | 0 | - | 4.96 | 612,052 |
| Countries That Border Russia | 0 | - | 4.98 | 431,549 |
| One Border Countries | 0 | - | 4.98 | 416,172 |
| Country Shape Quiz #2 | 0 | - | 4.97 | 380,597 |
| South America Capitals Quiz | 0 | - | 5.00 | 434,152 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,234 |
| Countries with Four Letters | 0 | - | 4.99 | 378,900 |
| Countries with the Most Borders | 0 | - | 4.97 | 363,523 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 389,665 |
| Countries Bordering France | 0 | - | 4.87 | 361,902 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,696 |
| Northernmost Countries | 0 | - | 4.99 | 331,181 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 339,979 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,477 |
| Countries Bordering Germany | 0 | - | 4.99 | 344,727 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.97 | 343,742 |
| Counties of England Map Quiz | 0 | - | 4.97 | 290,296 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,227 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 393,177 |
| World Map without 12 Countries | 0 | - | 4.97 | 318,925 |
| Australia Map Quiz | 0 | - | 4.94 | 323,385 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 338,960 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 378,801 |
| Majority Muslim Countries | 0 | - | 4.97 | 317,901 |
| Countries that Start with H | 0 | - | 4.96 | 522,175 |
| Countries that Start with J | 0 | - | 4.98 | 524,417 |
| World Capitals by Proximity | 0 | - | 4.89 | 304,046 |
| Countries with the Most Billionaires | 0 | - | 4.93 | 285,470 |
| "Land" Countries | 0 | - | 4.98 | 292,524 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 289,038 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.63 | 272,004 |
| Canada Provinces and Territories | 0 | - | 4.99 | 294,427 |
| Country Shape Quiz #3 | 0 | - | 4.92 | 270,346 |
| Countries with the Longest Total Borders | 0 | - | 4.98 | 290,116 |
| Flags of Africa Quiz | 0 | - | 4.99 | 397,211 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 289,266 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 224,491 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 242,476 |
| Countries with Z | 0 | - | 4.98 | 265,124 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,820 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,576 |
| Flags of North and South America Quiz | 0 | - | 4.99 | 316,724 |
| EU Countries Quiz | 0 | - | 4.99 | 231,725 |
| Biggest Cities in Germany | 0 | - | 4.95 | 268,390 |
| Countries that Border China | 0 | - | 4.96 | 235,970 |
| French-Speaking Countries | 0 | - | 4.81 | 224,344 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,382 |
| United States Cities Map Quiz | 0 | - | 4.96 | 203,328 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 229,641 |
| Every Country Shape | 0 | - | 5.00 | 392,227 |
| Europe Capital to Country | 0 | - | 4.99 | 223,890 |
| Longest International Borders | 0 | - | 4.99 | 236,869 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 235,225 |
| Biggest Cities by Language | 0 | - | 4.95 | 216,605 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,478 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 226,429 |
| Geographic Groups of Two #1 | 0 | - | 4.98 | 222,855 |
| Megacities on a World Map | 0 | - | 4.98 | 223,924 |
| World Currency Quiz | 0 | - | 4.92 | 251,586 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,962 |
| NATO Countries Quiz | 0 | - | 4.98 | 241,832 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 231,267 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 197,127 |
| Country Shape Quiz #4 | 0 | - | 4.92 | 200,034 |
| Places in their Native Language #1 | 0 | - | 4.86 | 213,861 |
| Official Cities in the UK | 0 | - | 4.87 | 237,311 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 196,029 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 198,321 |
| Countries Closest to Spain | 0 | - | 4.95 | 208,908 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 211,408 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 208,000 |
| Countries with Megacities | 0 | - | 4.99 | 202,169 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 213,646 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 209,830 |
| World Capitals by Map | 0 | - | 5.00 | 248,224 |
| Countries that Produce the Most Wine | 0 | - | 4.88 | 181,481 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,589 |
| World's Busiest Airports | 0 | - | 4.94 | 191,441 |
| Country Chain | 0 | - | 4.96 | 200,185 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.92 | 260,760 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 234,608 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 201,137 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 183,313 |
| Independence from Whom | 0 | - | 4.99 | 189,649 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,293 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 171,777 |
| Countries by Borders #1 | 0 | - | 5.00 | 178,579 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,997 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 163,660 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 182,413 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 183,488 |
| Flags of Oceania | 0 | - | 5.00 | 220,993 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 203,563 |
| Largest Countries with No Borders | 0 | - | 4.97 | 204,256 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.96 | 163,627 |
| Countries Closest to Canada | 0 | - | 4.90 | 186,571 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,407 |
| Countries in their Native Language | 0 | - | 4.98 | 180,793 |
| Countries Closest to Italy | 0 | - | 4.97 | 182,051 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 153,924 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 163,119 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,148 |
| Monarchies of the World | 0 | - | 4.93 | 154,440 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,966 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 178,603 |
| Top 10 Least Populous U.S. States | 0 | - | 4.93 | 175,363 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 156,858 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,892 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 168,899 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 179,575 |
| North America Capitals Quiz | 0 | - | 4.99 | 190,890 |
| Countries That End in Y | 0 | - | 4.92 | 176,963 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 182,190 |
| Olympic Host Countries | 0 | - | 4.98 | 164,547 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,052 |
| Regions of Countries #1 | 0 | - | 4.97 | 151,108 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 154,858 |
| Every European Country Shape | 0 | - | 4.95 | 173,924 |
| Countries of the Middle East | 0 | - | 4.95 | 177,428 |
| Countries by Official Language | 0 | - | 4.96 | 175,422 |
| Countries Closest to Australia | 0 | - | 4.99 | 147,177 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,170 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 140,739 |
| Counties of Ireland | 0 | - | 4.90 | 163,898 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 165,811 |
| Countries Bordering India | 0 | - | 4.98 | 157,147 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 136,058 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,557 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,469 |
| Countries with the Most Forest | 0 | - | 4.89 | 138,806 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,667 |
| European Cities by Clue | 0 | - | 4.71 | 85,753 |
| Geography Analogies #1 | 0 | - | 4.71 | 81,976 |
| Islands by Country #2 | 0 | - | 4.79 | 71,809 |
