| Island Countries | 0 | - | 4.99 | 711,886 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,301 |
| European Countries by Clue | 0 | - | 4.92 | 184,030 |
| Countries by Military Spending | 0 | - | 4.93 | 178,751 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,090 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,752,796 |
| US States Quiz | 0 | - | 5.00 | 16,962,344 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,752 |
| United States Map Quiz | 0 | - | 4.98 | 4,167,839 |
| World Capitals Quiz | 0 | - | 5.00 | 5,096,584 |
| Europe Map Quiz | 0 | - | 5.00 | 4,780,696 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,983 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,515 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,316 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,498 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,761 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,968 |
| All Country Flags of the World | 0 | - | 5.00 | 3,699,606 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,916 |
| Countries that Start with B | 0 | - | 4.95 | 2,302,971 |
| Countries that Start with A | 0 | - | 4.98 | 2,171,893 |
| Countries of Africa | 0 | - | 5.00 | 2,552,961 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,091 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,363 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,103 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,738 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,230 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,789 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,650 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,595,896 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,209 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,105 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,387 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,801 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,749 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,193 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,784 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,345 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,802 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,918 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,077 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,253,799 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,048 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,975 |
| Random Country to Capital | 0 | - | 4.98 | 925,645 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,528 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,605 |
| Asia Map Quiz | 0 | - | 4.99 | 923,038 |
| Countries that Start with U | 0 | - | 4.97 | 907,425 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,717 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,935 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,570 |
| Counties of England | 0 | - | 4.97 | 801,268 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,176 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,897 |
| Top World Languages | 0 | - | 4.92 | 827,598 |
| Countries of South America | 0 | - | 5.00 | 930,308 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,187 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,294 |
| Countries that Start with K | 0 | - | 4.97 | 819,336 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,923 |
| US States with an Empty Map | 0 | - | 5.00 | 627,500 |
| Countries that Start with V | 0 | - | 4.98 | 611,223 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,126 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,813 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,255 |
| Countries that Start with D | 0 | - | 4.96 | 714,488 |
| Countries That Border Russia | 0 | - | 4.98 | 463,904 |
| One Border Countries | 0 | - | 4.98 | 471,099 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,976 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,960 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,695 |
| Countries with Four Letters | 0 | - | 4.99 | 424,934 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,947 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,599 |
| Countries Bordering France | 0 | - | 4.83 | 404,350 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,841 |
| Northernmost Countries | 0 | - | 4.99 | 363,225 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,713 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,189 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,331 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,261 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,662 |
| Landlocked Countries | 0 | - | 4.99 | 424,093 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,179 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,623 |
| Australia Map Quiz | 0 | - | 4.95 | 345,767 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,526 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,852 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,764 |
| Countries that Start with H | 0 | - | 4.96 | 608,184 |
| Countries that Start with J | 0 | - | 4.98 | 605,661 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,164 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,517 |
| "Land" Countries | 0 | - | 4.98 | 337,952 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,654 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,911 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,162 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,863 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,612 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,767 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,204 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,038 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,937 |
| Countries with Z | 0 | - | 4.98 | 292,036 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,195 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,663 |
| Flags of North and South America | 0 | - | 4.99 | 375,862 |
| EU Countries Quiz | 0 | - | 4.99 | 276,885 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,728 |
| Countries that Border China | 0 | - | 4.96 | 263,971 |
| French-Speaking Countries | 0 | - | 4.85 | 271,359 |
| Countries with Five Letters | 0 | - | 4.96 | 283,286 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,010 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,412 |
| Every Country Shape | 0 | - | 5.00 | 469,592 |
| Europe Capital to Country | 0 | - | 4.99 | 251,622 |
| Longest International Borders | 0 | - | 4.99 | 265,560 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,837 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,418 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,522 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,307 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,777 |
| Megacities on a World Map | 0 | - | 4.98 | 256,238 |
| World Currency Quiz | 0 | - | 4.92 | 305,703 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,901 |
| NATO Countries | 0 | - | 4.98 | 282,622 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,389 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,438 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,442 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,003 |
| Official Cities in the UK | 0 | - | 4.89 | 285,510 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,078 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,402 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,803 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,796 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,576 |
| Countries with Megacities | 0 | - | 4.99 | 266,040 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,262 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,996 |
| World Capitals by Map | 0 | - | 5.00 | 288,663 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,121 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,763 |
| World's Busiest Airports | 0 | - | 4.96 | 236,330 |
| Country Chain | 0 | - | 4.96 | 218,082 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,486 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,833 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,067 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,409 |
| Independence from Whom | 0 | - | 4.99 | 212,651 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,158 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,586 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,883 |
| Countries with Six Letters | 0 | - | 4.94 | 214,072 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,106 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,577 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,640 |
| Flags of Oceania | 0 | - | 5.00 | 261,830 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,345 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,054 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,074 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,879 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,836 |
| Countries in their Native Language | 0 | - | 4.99 | 199,468 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,059 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,269 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,732 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,229 |
| Monarchies of the World | 0 | - | 4.94 | 169,799 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,049 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,623 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,406 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,831 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,164 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,079 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,439 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,552 |
| Countries That End in Y | 0 | - | 4.91 | 186,011 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,269 |
| Olympic Host Countries | 0 | - | 4.98 | 201,596 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,092 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,063 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,456 |
| Every European Country Shape | 0 | - | 4.96 | 202,620 |
| Countries of the Middle East | 0 | - | 4.96 | 202,270 |
| Countries by Official Language | 0 | - | 4.95 | 195,694 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,352 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,948 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,944 |
| Counties of Ireland | 0 | - | 4.92 | 196,837 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,512 |
| Countries Bordering India | 0 | - | 4.98 | 163,717 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,924 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,071 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,398 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,840 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,363 |
| European Cities by Clue | 0 | - | 4.70 | 89,140 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,154 |
| Islands by Country #2 | 0 | - | 4.80 | 77,741 |
