| Island Countries | 0 | - | 4.99 | 712,906 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,821 |
| European Countries by Clue | 0 | - | 4.92 | 184,261 |
| Countries by Military Spending | 0 | - | 4.93 | 179,139 |
| Countries by Three Words #2 | 0 | - | 4.97 | 205,064 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,949,477 |
| US States Quiz | 0 | - | 5.00 | 17,015,138 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,658,243 |
| United States Map Quiz | 0 | - | 4.98 | 4,172,970 |
| World Capitals Quiz | 0 | - | 5.00 | 5,112,038 |
| Europe Map Quiz | 0 | - | 5.00 | 4,791,847 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,852,034 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,260 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,547,374 |
| Random Capital to Country | 0 | - | 4.99 | 2,603,527 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,560 |
| Africa Map Quiz | 0 | - | 5.00 | 2,130,241 |
| All Country Flags of the World | 0 | - | 5.00 | 3,722,198 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,522 |
| Countries that Start with B | 0 | - | 4.95 | 2,308,389 |
| Countries that Start with A | 0 | - | 4.98 | 2,177,763 |
| Countries of Africa | 0 | - | 5.00 | 2,563,428 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,453,168 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,700,060 |
| South America Map Quiz | 0 | - | 5.00 | 1,558,017 |
| Countries that Start with C | 0 | - | 4.96 | 1,832,971 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,387,828 |
| Countries that Start with S | 0 | - | 4.98 | 1,764,446 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,631 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,601,640 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,146 |
| Countries that Start with G | 0 | - | 4.97 | 1,512,805 |
| Countries that Start with M | 0 | - | 4.97 | 1,389,288 |
| Countries that Start with E | 0 | - | 4.95 | 1,386,266 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,336,808 |
| Central America and Caribbean Map Quiz | 0 | - | 4.90 | 905,359 |
| Countries that Start with I | 0 | - | 4.92 | 1,295,503 |
| Countries that Start with P | 0 | - | 4.94 | 1,222,997 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,849 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,097,982 |
| Countries that Start with N | 0 | - | 4.93 | 1,124,831 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,260,555 |
| Countries that Start with L | 0 | - | 4.98 | 1,097,787 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 910,129 |
| Random Country to Capital | 0 | - | 4.98 | 929,601 |
| Countries that Start with T | 0 | - | 4.90 | 1,015,641 |
| Biggest Cities in the United States | 0 | - | 4.94 | 988,705 |
| Asia Map Quiz | 0 | - | 4.99 | 926,303 |
| Countries that Start with U | 0 | - | 4.97 | 909,033 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,991 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,032,821 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 736,962 |
| Counties of England | 0 | - | 4.97 | 803,885 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 645,164 |
| Oceania Map Quiz | 0 | - | 4.98 | 660,043 |
| Top World Languages | 0 | - | 4.92 | 830,945 |
| Countries of South America | 0 | - | 5.00 | 933,930 |
| Africa Capitals Quiz | 0 | - | 4.99 | 744,854 |
| Asia Capitals Quiz | 0 | - | 4.98 | 699,708 |
| Countries that Start with K | 0 | - | 4.97 | 821,513 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,719 |
| US States with an Empty Map | 0 | - | 5.00 | 629,362 |
| Countries that Start with V | 0 | - | 4.98 | 612,420 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 510,717 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 414,335 |
| Flags of Asia Quiz | 0 | - | 4.99 | 621,540 |
| Countries that Start with D | 0 | - | 4.96 | 717,464 |
| Countries That Border Russia | 0 | - | 4.98 | 464,779 |
| One Border Countries | 0 | - | 4.98 | 472,426 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,765 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,481 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,207 |
| Countries with Four Letters | 0 | - | 4.99 | 426,297 |
| Countries with the Most Borders | 0 | - | 4.97 | 390,934 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,962 |
| Countries Bordering France | 0 | - | 4.83 | 405,231 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,866 |
| Northernmost Countries | 0 | - | 4.99 | 364,475 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,480 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,980 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,129 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,822 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,223 |
| Landlocked Countries | 0 | - | 4.99 | 426,995 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,261 |
| World Map without 12 Countries | 0 | - | 4.97 | 346,379 |
| Australia Map Quiz | 0 | - | 4.95 | 346,414 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,399 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,046 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,235 |
| Countries that Start with H | 0 | - | 4.96 | 610,292 |
| Countries that Start with J | 0 | - | 4.98 | 607,689 |
| World Capitals by Proximity | 0 | - | 4.91 | 334,288 |
| Countries with the Most Billionaires | 0 | - | 4.91 | 337,234 |
| "Land" Countries | 0 | - | 4.98 | 338,892 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 302,146 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 292,393 |
| Canada Provinces and Territories | 0 | - | 5.00 | 346,866 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 297,629 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 314,221 |
| Flags of Africa Quiz | 0 | - | 5.00 | 478,742 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,072 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,549 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 275,412 |
| Countries with Z | 0 | - | 4.98 | 292,904 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,873 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,462 |
| Flags of North and South America | 0 | - | 4.99 | 377,805 |
| EU Countries Quiz | 0 | - | 4.99 | 278,739 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,555 |
| Countries that Border China | 0 | - | 4.96 | 264,455 |
| French-Speaking Countries | 0 | - | 4.85 | 271,834 |
| Countries with Five Letters | 0 | - | 4.96 | 284,529 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,292 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,780 |
| Every Country Shape | 0 | - | 5.00 | 472,175 |
| Europe Capital to Country | 0 | - | 4.99 | 252,477 |
| Longest International Borders | 0 | - | 4.99 | 265,949 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,529 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,810 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,348 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,794 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 238,278 |
| Megacities on a World Map | 0 | - | 4.98 | 257,349 |
| World Currency Quiz | 0 | - | 4.92 | 307,355 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,449 |
| NATO Countries | 0 | - | 4.98 | 283,871 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,691 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 214,234 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 227,008 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,564 |
| Official Cities in the UK | 0 | - | 4.89 | 286,725 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,714 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,687 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,311 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 230,360 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,973 |
| Countries with Megacities | 0 | - | 4.99 | 267,691 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,828 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,846 |
| World Capitals by Map | 0 | - | 5.00 | 289,808 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,427 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,153 |
| World's Busiest Airports | 0 | - | 4.96 | 237,826 |
| Country Chain | 0 | - | 4.96 | 218,617 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 281,141 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,174 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 219,074 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,828 |
| Independence from Whom | 0 | - | 4.99 | 213,341 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,611 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,996 |
| Countries by Borders #1 | 0 | - | 5.00 | 195,127 |
| Countries with Six Letters | 0 | - | 4.94 | 214,875 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,333 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,783 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 210,339 |
| Flags of Oceania | 0 | - | 5.00 | 263,279 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,005 |
| Largest Countries with No Borders | 0 | - | 4.96 | 222,499 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,286 |
| Countries Closest to Canada | 0 | - | 4.91 | 199,603 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,458 |
| Countries in their Native Language | 0 | - | 4.99 | 199,915 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,575 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,883 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 171,025 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,137 |
| Monarchies of the World | 0 | - | 4.94 | 170,467 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,616 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 194,144 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,773 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,096 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,882 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,298 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 192,134 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,595 |
| Countries That End in Y | 0 | - | 4.91 | 186,158 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,913 |
| Olympic Host Countries | 0 | - | 4.98 | 202,162 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,852 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,327 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,780 |
| Every European Country Shape | 0 | - | 4.96 | 203,210 |
| Countries of the Middle East | 0 | - | 4.96 | 203,181 |
| Countries by Official Language | 0 | - | 4.95 | 196,168 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,921 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,273 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 154,191 |
| Counties of Ireland | 0 | - | 4.92 | 197,578 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,869 |
| Countries Bordering India | 0 | - | 4.98 | 163,868 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 145,412 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,202 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,427 |
| Countries with the Most Forest | 0 | - | 4.88 | 148,272 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,784 |
| European Cities by Clue | 0 | - | 4.70 | 89,207 |
| Geography Analogies #1 | 0 | - | 4.70 | 96,444 |
| Islands by Country #2 | 0 | - | 4.80 | 77,941 |
