| Island Countries | 0 | - | 4.99 | 710,783 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,659 |
| European Countries by Clue | 0 | - | 4.92 | 183,740 |
| Countries by Military Spending | 0 | - | 4.93 | 178,215 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,878 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,529,021 |
| US States Quiz | 0 | - | 5.00 | 16,897,110 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,628,471 |
| United States Map Quiz | 0 | - | 4.98 | 4,161,516 |
| World Capitals Quiz | 0 | - | 5.00 | 5,079,264 |
| Europe Map Quiz | 0 | - | 5.00 | 4,767,090 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,832,164 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,945 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,666 |
| Random Capital to Country | 0 | - | 4.99 | 2,593,072 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,773,658 |
| Africa Map Quiz | 0 | - | 5.00 | 2,119,939 |
| All Country Flags of the World | 0 | - | 5.00 | 3,672,715 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,103,533 |
| Countries that Start with B | 0 | - | 4.95 | 2,296,391 |
| Countries that Start with A | 0 | - | 4.98 | 2,164,780 |
| Countries of Africa | 0 | - | 5.00 | 2,541,145 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,026 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,691,382 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,801 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,687 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,990 |
| Countries that Start with S | 0 | - | 4.98 | 1,756,321 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,447,066 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,588,759 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,008 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,724 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,829 |
| Countries that Start with E | 0 | - | 4.95 | 1,378,483 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,804 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,652 |
| Countries that Start with I | 0 | - | 4.92 | 1,289,339 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,183 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,975 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,650 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,763 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,246,369 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,750 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,677 |
| Random Country to Capital | 0 | - | 4.98 | 921,713 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,666 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,820 |
| Asia Map Quiz | 0 | - | 4.99 | 918,038 |
| Countries that Start with U | 0 | - | 4.97 | 905,167 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,546 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,592 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,955 |
| Counties of England | 0 | - | 4.97 | 797,924 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,022 |
| Oceania Map Quiz | 0 | - | 4.98 | 643,194 |
| Top World Languages | 0 | - | 4.92 | 823,348 |
| Countries of South America | 0 | - | 5.00 | 926,306 |
| Africa Capitals Quiz | 0 | - | 4.99 | 738,736 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,934 |
| Countries that Start with K | 0 | - | 4.97 | 816,694 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,877 |
| US States with an Empty Map | 0 | - | 5.00 | 625,340 |
| Countries that Start with V | 0 | - | 4.98 | 609,797 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,208 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,243 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,647 |
| Countries that Start with D | 0 | - | 4.96 | 710,778 |
| Countries That Border Russia | 0 | - | 4.98 | 462,104 |
| One Border Countries | 0 | - | 4.98 | 469,467 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,143 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,986 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,791 |
| Countries with Four Letters | 0 | - | 4.99 | 422,966 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,817 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,240 |
| Countries Bordering France | 0 | - | 4.83 | 402,880 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,704 |
| Northernmost Countries | 0 | - | 4.99 | 361,652 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,764 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,318 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,698 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,288 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,887 |
| Landlocked Countries | 0 | - | 4.99 | 421,303 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,586 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,718 |
| Australia Map Quiz | 0 | - | 4.95 | 344,864 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,499 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,294 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,052 |
| Countries that Start with H | 0 | - | 4.96 | 605,577 |
| Countries that Start with J | 0 | - | 4.98 | 603,218 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,781 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,716 |
| "Land" Countries | 0 | - | 4.98 | 337,122 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,116 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 291,164 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,147 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,248 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,915 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,289 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,894 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,559 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,104 |
| Countries with Z | 0 | - | 4.98 | 291,244 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,183 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,029 |
| Flags of North and South America | 0 | - | 4.99 | 373,751 |
| EU Countries Quiz | 0 | - | 4.99 | 274,976 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,766 |
| Countries that Border China | 0 | - | 4.96 | 263,342 |
| French-Speaking Countries | 0 | - | 4.85 | 270,716 |
| Countries with Five Letters | 0 | - | 4.96 | 282,117 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,342 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,927 |
| Every Country Shape | 0 | - | 5.00 | 466,597 |
| Europe Capital to Country | 0 | - | 4.99 | 250,603 |
| Longest International Borders | 0 | - | 4.99 | 265,084 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,903 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,770 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,017 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,624 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,129 |
| Megacities on a World Map | 0 | - | 4.98 | 254,997 |
| World Currency Quiz | 0 | - | 4.92 | 303,691 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,962 |
| NATO Countries | 0 | - | 4.98 | 281,063 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,027 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,548 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,798 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,136 |
| Official Cities in the UK | 0 | - | 4.89 | 284,187 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,287 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,050 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,191 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,210 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,115 |
| Countries with Megacities | 0 | - | 4.99 | 264,143 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,577 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,114 |
| World Capitals by Map | 0 | - | 5.00 | 287,099 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,802 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,324 |
| World's Busiest Airports | 0 | - | 4.96 | 234,298 |
| Country Chain | 0 | - | 4.96 | 217,258 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,632 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,409 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,175 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,876 |
| Independence from Whom | 0 | - | 4.99 | 211,929 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,611 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,813 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,579 |
| Countries with Six Letters | 0 | - | 4.94 | 213,362 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,845 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,328 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,820 |
| Flags of Oceania | 0 | - | 5.00 | 259,944 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,595 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,565 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,751 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,471 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,358 |
| Countries in their Native Language | 0 | - | 4.99 | 198,892 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,192 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,588 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,413 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,794 |
| Monarchies of the World | 0 | - | 4.94 | 169,004 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,549 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,566 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,837 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,407 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,395 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,880 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,986 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,233 |
| Countries That End in Y | 0 | - | 4.91 | 185,829 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,609 |
| Olympic Host Countries | 0 | - | 4.98 | 200,955 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,026 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,593 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,080 |
| Every European Country Shape | 0 | - | 4.96 | 202,000 |
| Countries of the Middle East | 0 | - | 4.96 | 201,372 |
| Countries by Official Language | 0 | - | 4.95 | 195,110 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,038 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,559 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,672 |
| Counties of Ireland | 0 | - | 4.92 | 195,649 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,056 |
| Countries Bordering India | 0 | - | 4.98 | 163,469 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,679 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,925 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,023 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,623 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,893 |
| European Cities by Clue | 0 | - | 4.70 | 89,080 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,218 |
| Islands by Country #2 | 0 | - | 4.80 | 77,488 |
