| Island Countries | 0 | - | 4.99 | 707,727 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,300 |
| European Countries by Clue | 0 | - | 4.92 | 182,400 |
| Countries by Military Spending | 0 | - | 4.93 | 176,452 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,665 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,943,403 |
| US States Quiz | 0 | - | 5.00 | 16,709,335 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,357 |
| United States Map Quiz | 0 | - | 4.98 | 4,142,569 |
| World Capitals Quiz | 0 | - | 5.00 | 5,033,429 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,830 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,802,244 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,363,093 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,526,882 |
| Random Capital to Country | 0 | - | 4.99 | 2,578,624 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,317 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,923 |
| All Country Flags of the World | 0 | - | 5.00 | 3,604,989 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,483 |
| Countries that Start with B | 0 | - | 4.95 | 2,280,457 |
| Countries that Start with A | 0 | - | 4.97 | 2,147,522 |
| Countries of Africa | 0 | - | 5.00 | 2,509,278 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,200 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,678,209 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,542 |
| Countries that Start with C | 0 | - | 4.96 | 1,810,830 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,380 |
| Countries that Start with S | 0 | - | 4.98 | 1,744,977 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,587 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,571,751 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,461 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,280 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,712 |
| Countries that Start with E | 0 | - | 4.95 | 1,367,933 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,329 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 899,918 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,604 |
| Countries that Start with P | 0 | - | 4.94 | 1,208,864 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,841 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,658 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,093 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,227,574 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,212 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,376 |
| Random Country to Capital | 0 | - | 4.98 | 912,017 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,464 |
| Biggest Cities in the United States | 0 | - | 4.93 | 967,206 |
| Asia Map Quiz | 0 | - | 4.99 | 907,459 |
| Countries that Start with U | 0 | - | 4.97 | 900,107 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,126 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,308 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 729,847 |
| Counties of England | 0 | - | 4.97 | 789,601 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,206 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,633 |
| Top World Languages | 0 | - | 4.92 | 813,486 |
| Countries of South America | 0 | - | 5.00 | 915,290 |
| Africa Capitals Quiz | 0 | - | 4.99 | 730,560 |
| Asia Capitals Quiz | 0 | - | 4.98 | 686,231 |
| Countries that Start with K | 0 | - | 4.97 | 809,657 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,276 |
| US States with an Empty Map | 0 | - | 5.00 | 619,126 |
| Countries that Start with V | 0 | - | 4.98 | 605,271 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,134 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 411,264 |
| Flags of Asia Quiz | 0 | - | 4.99 | 605,939 |
| Countries that Start with D | 0 | - | 4.96 | 701,904 |
| Countries That Border Russia | 0 | - | 4.98 | 459,037 |
| One Border Countries | 0 | - | 4.98 | 464,619 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 414,950 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,468 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,999 |
| Countries with Four Letters | 0 | - | 4.99 | 418,696 |
| Countries with the Most Borders | 0 | - | 4.97 | 385,930 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,894 |
| Countries Bordering France | 0 | - | 4.83 | 399,581 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,784 |
| Northernmost Countries | 0 | - | 4.99 | 357,888 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,427 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,201 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,168 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,356 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,163 |
| Landlocked Countries | 0 | - | 4.99 | 413,864 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,393 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,468 |
| Australia Map Quiz | 0 | - | 4.94 | 342,583 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,943 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,798 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,680 |
| Countries that Start with H | 0 | - | 4.96 | 598,254 |
| Countries that Start with J | 0 | - | 4.98 | 596,310 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,568 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 332,979 |
| "Land" Countries | 0 | - | 4.98 | 333,720 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,432 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,736 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,106 |
| Country Shapes Quiz #3 | 0 | - | 4.91 | 294,568 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,638 |
| Flags of Africa Quiz | 0 | - | 5.00 | 463,760 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,937 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,384 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,262 |
| Countries with Z | 0 | - | 4.98 | 287,938 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,194 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,035 |
| Flags of North and South America | 0 | - | 4.99 | 367,670 |
| EU Countries Quiz | 0 | - | 4.99 | 270,110 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,386 |
| Countries that Border China | 0 | - | 4.96 | 261,889 |
| French-Speaking Countries | 0 | - | 4.85 | 268,865 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,741 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,274 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,093 |
| Every Country Shape | 0 | - | 5.00 | 459,197 |
| Europe Capital to Country | 0 | - | 4.99 | 248,025 |
| Longest International Borders | 0 | - | 4.99 | 263,573 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,530 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,898 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,418 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,740 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,885 |
| Megacities on a World Map | 0 | - | 4.98 | 251,090 |
| World Currency Quiz | 0 | - | 4.92 | 298,681 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,414 |
| NATO Countries | 0 | - | 4.98 | 275,983 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,933 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,239 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,353 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,527 |
| Official Cities in the UK | 0 | - | 4.89 | 280,722 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,215 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,256 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,377 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,472 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,539 |
| Countries with Megacities | 0 | - | 4.99 | 247,268 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,841 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 231,040 |
| World Capitals by Map | 0 | - | 5.00 | 283,329 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 190,976 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,440 |
| World's Busiest Airports | 0 | - | 4.94 | 210,586 |
| Country Chain | 0 | - | 4.96 | 215,801 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,455 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,940 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,685 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,001 |
| Independence from Whom | 0 | - | 4.99 | 209,773 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,171 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,705 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,647 |
| Countries with Six Letters | 0 | - | 4.93 | 210,412 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,640 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,507 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,499 |
| Flags of Oceania | 0 | - | 5.00 | 255,403 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,553 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,092 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 179,997 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,398 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,390 |
| Countries in their Native Language | 0 | - | 4.99 | 196,687 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,386 |
| World Map without 12 Countries #2 | 0 | - | 4.97 | 171,414 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,420 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,420 |
| Monarchies of the World | 0 | - | 4.94 | 166,702 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,590 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 190,817 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,465 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,084 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,243 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,096 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 189,968 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,995 |
| Countries That End in Y | 0 | - | 4.90 | 185,222 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,316 |
| Olympic Host Countries | 0 | - | 4.98 | 198,950 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,847 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,950 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,175 |
| Every European Country Shape | 0 | - | 4.96 | 200,263 |
| Countries of the Middle East | 0 | - | 4.96 | 199,037 |
| Countries by Official Language | 0 | - | 4.95 | 192,825 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,227 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,150 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,763 |
| Counties of Ireland | 0 | - | 4.92 | 193,172 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,490 |
| Countries Bordering India | 0 | - | 4.98 | 162,628 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,676 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,514 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,702 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,657 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,439 |
| European Cities by Clue | 0 | - | 4.70 | 88,829 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,970 |
| Islands by Country #2 | 0 | - | 4.80 | 77,012 |
