| Island Countries | 0 | - | 4.99 | 711,948 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,321 |
| European Countries by Clue | 0 | - | 4.92 | 184,036 |
| Countries by Military Spending | 0 | - | 4.93 | 178,773 |
| Countries by Three Words #2 | 0 | - | 4.97 | 204,142 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,761,569 |
| US States Quiz | 0 | - | 5.00 | 16,964,653 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,645,377 |
| United States Map Quiz | 0 | - | 4.98 | 4,168,051 |
| World Capitals Quiz | 0 | - | 5.00 | 5,097,461 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,198 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,843,376 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,046 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,543,508 |
| Random Capital to Country | 0 | - | 4.99 | 2,598,741 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,591 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,223 |
| All Country Flags of the World | 0 | - | 5.00 | 3,700,677 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,141 |
| Countries that Start with B | 0 | - | 4.95 | 2,303,248 |
| Countries that Start with A | 0 | - | 4.98 | 2,172,205 |
| Countries of Africa | 0 | - | 5.00 | 2,553,409 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,165 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,530 |
| South America Map Quiz | 0 | - | 5.00 | 1,554,231 |
| Countries that Start with C | 0 | - | 4.96 | 1,828,938 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,386,314 |
| Countries that Start with S | 0 | - | 4.98 | 1,760,970 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,849 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,596,211 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,604 |
| Countries that Start with G | 0 | - | 4.97 | 1,509,316 |
| Countries that Start with M | 0 | - | 4.97 | 1,386,539 |
| Countries that Start with E | 0 | - | 4.95 | 1,382,994 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,892 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 904,241 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,932 |
| Countries that Start with P | 0 | - | 4.94 | 1,220,485 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,951 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,096,023 |
| Countries that Start with N | 0 | - | 4.93 | 1,122,204 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,254,097 |
| Countries that Start with L | 0 | - | 4.98 | 1,095,182 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 909,041 |
| Random Country to Capital | 0 | - | 4.98 | 925,807 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,639 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,785 |
| Asia Map Quiz | 0 | - | 4.99 | 923,204 |
| Countries that Start with U | 0 | - | 4.97 | 907,503 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,896 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,029,091 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,644 |
| Counties of England | 0 | - | 4.97 | 801,413 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 643,252 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,019 |
| Top World Languages | 0 | - | 4.92 | 827,783 |
| Countries of South America | 0 | - | 5.00 | 930,502 |
| Africa Capitals Quiz | 0 | - | 4.99 | 742,317 |
| Asia Capitals Quiz | 0 | - | 4.98 | 697,462 |
| Countries that Start with K | 0 | - | 4.97 | 819,446 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,971 |
| US States with an Empty Map | 0 | - | 5.00 | 627,577 |
| Countries that Start with V | 0 | - | 4.98 | 611,295 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 509,190 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,840 |
| Flags of Asia Quiz | 0 | - | 4.99 | 618,430 |
| Countries that Start with D | 0 | - | 4.96 | 714,626 |
| Countries That Border Russia | 0 | - | 4.98 | 463,972 |
| One Border Countries | 0 | - | 4.98 | 471,185 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 418,016 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,059 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,766 |
| Countries with Four Letters | 0 | - | 4.99 | 425,010 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,997 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,653 |
| Countries Bordering France | 0 | - | 4.83 | 404,406 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,904 |
| Northernmost Countries | 0 | - | 4.99 | 363,287 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,771 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,224 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,368 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,290 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,691 |
| Landlocked Countries | 0 | - | 4.99 | 424,205 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,261 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,661 |
| Australia Map Quiz | 0 | - | 4.95 | 345,807 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,561 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,927 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,854 |
| Countries that Start with H | 0 | - | 4.96 | 608,303 |
| Countries that Start with J | 0 | - | 4.98 | 605,764 |
| World Capitals by Proximity | 0 | - | 4.91 | 333,220 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,557 |
| "Land" Countries | 0 | - | 4.98 | 337,991 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,678 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,933 |
| Canada Provinces and Territories | 0 | - | 5.00 | 345,243 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,893 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,659 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,930 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,225 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,057 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 274,011 |
| Countries with Z | 0 | - | 4.98 | 292,072 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,236 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,701 |
| Flags of North and South America | 0 | - | 4.99 | 375,956 |
| EU Countries Quiz | 0 | - | 4.99 | 276,984 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,783 |
| Countries that Border China | 0 | - | 4.96 | 264,004 |
| French-Speaking Countries | 0 | - | 4.85 | 271,391 |
| Countries with Five Letters | 0 | - | 4.96 | 283,340 |
| United States Cities Map Quiz | 0 | - | 4.96 | 215,033 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,482 |
| Every Country Shape | 0 | - | 5.00 | 469,747 |
| Europe Capital to Country | 0 | - | 4.99 | 251,661 |
| Longest International Borders | 0 | - | 4.99 | 265,584 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,920 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,438 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,728 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,329 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,805 |
| Megacities on a World Map | 0 | - | 4.98 | 256,301 |
| World Currency Quiz | 0 | - | 4.92 | 305,791 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,933 |
| NATO Countries | 0 | - | 4.98 | 282,685 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,400 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,486 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,469 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,029 |
| Official Cities in the UK | 0 | - | 4.89 | 285,585 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 216,108 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,423 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,829 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,811 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,594 |
| Countries with Megacities | 0 | - | 4.99 | 266,184 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,284 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,040 |
| World Capitals by Map | 0 | - | 5.00 | 288,726 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,137 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,790 |
| World's Busiest Airports | 0 | - | 4.96 | 236,418 |
| Country Chain | 0 | - | 4.96 | 218,124 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,521 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,936 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 218,091 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,423 |
| Independence from Whom | 0 | - | 4.99 | 212,685 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,171 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,626 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,896 |
| Countries with Six Letters | 0 | - | 4.94 | 214,104 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,117 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,593 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,680 |
| Flags of Oceania | 0 | - | 5.00 | 261,919 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,376 |
| Largest Countries with No Borders | 0 | - | 4.97 | 222,068 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,088 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,895 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,887 |
| Countries in their Native Language | 0 | - | 4.99 | 199,499 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,104 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,305 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,745 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,248 |
| Monarchies of the World | 0 | - | 4.94 | 169,842 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,067 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,644 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,420 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,840 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,195 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,089 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,467 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,602 |
| Countries That End in Y | 0 | - | 4.91 | 186,015 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,316 |
| Olympic Host Countries | 0 | - | 4.98 | 201,621 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,145 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,084 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,476 |
| Every European Country Shape | 0 | - | 4.96 | 202,642 |
| Countries of the Middle East | 0 | - | 4.96 | 202,299 |
| Countries by Official Language | 0 | - | 4.95 | 195,736 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,365 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,969 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,950 |
| Counties of Ireland | 0 | - | 4.92 | 196,870 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,536 |
| Countries Bordering India | 0 | - | 4.98 | 163,725 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,936 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,077 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,412 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,855 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,367 |
| European Cities by Clue | 0 | - | 4.70 | 89,143 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,160 |
| Islands by Country #2 | 0 | - | 4.80 | 77,761 |
