| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,110 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,401 |
| Seas on the World Map | 0 | - | 4.96 | 135,365 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,029 |
| World's Longest Rivers | 0 | - | 4.90 | 136,751 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,530 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,464 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,840 |
| North Sea Countries | 0 | - | 4.92 | 87,400 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,807 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,417 |
| Countries With No Rivers | 0 | - | 4.96 | 76,826 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,118 |
| Black Sea Countries | 0 | - | 4.87 | 60,607 |
| South China Sea Countries | 0 | - | 4.78 | 57,707 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,711 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,237 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,759 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,489 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,387 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 55,967 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,261 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,455 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,500 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,472,914 |
| US States Quiz | 0 | - | 5.00 | 16,880,029 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,476 |
| World Capitals Quiz | 0 | - | 5.00 | 5,075,012 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,925 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,879 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,568 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,167 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,748 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,552 |
| All Country Flags of the World | 0 | - | 5.00 | 3,666,283 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,823 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,312 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,794 |
| Countries of Africa | 0 | - | 5.00 | 2,537,926 |
| Countries that Start with A | 0 | - | 4.98 | 2,163,110 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,434 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,140 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,690,057 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,375 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,028 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,162 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,479 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,993 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,825 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,623 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,938 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,468 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,964 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,532 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,341 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,105 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,616 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,093 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,946 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,396 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,956 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,026 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,230 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,679 |
| Random Country to Capital | 0 | - | 4.98 | 920,806 |
| Countries that Start with U | 0 | - | 4.97 | 904,652 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,331 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,552 |
| Asia Map Quiz | 0 | - | 4.99 | 917,091 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,561 |
| Countries of South America | 0 | - | 5.00 | 925,323 |
| Island Countries | 0 | - | 4.99 | 710,486 |
| Biggest Cities in the World | 0 | - | 4.91 | 799,094 |
| Counties of England | 0 | - | 4.97 | 797,098 |
| Top World Languages | 0 | - | 4.92 | 822,458 |
| Countries that Start with K | 0 | - | 4.97 | 815,993 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,573 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,899 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,537 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,092 |
| Countries that Start with V | 0 | - | 4.98 | 609,462 |
| US States with an Empty Map | 0 | - | 5.00 | 624,766 |
| Countries that Start with D | 0 | - | 4.96 | 709,866 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,329 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,782 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,626 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,697 |
| Countries that Start with J | 0 | - | 4.98 | 602,629 |
| Countries That Border Russia | 0 | - | 4.98 | 461,819 |
| Countries that Start with H | 0 | - | 4.96 | 604,942 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,817 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,539 |
| One Border Countries | 0 | - | 4.98 | 468,725 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,291 |
| Countries with Four Letters | 0 | - | 4.99 | 422,554 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,947 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,547 |
| Countries Bordering France | 0 | - | 4.83 | 402,624 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,354 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,111 |
| Northernmost Countries | 0 | - | 4.99 | 361,315 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,540 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,411 |
| Every Country Shape | 0 | - | 5.00 | 465,662 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,095 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,481 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,227 |
| Australia Map Quiz | 0 | - | 4.95 | 344,665 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,766 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,555 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,474 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,498 |
| Landlocked Countries | 0 | - | 4.99 | 420,705 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,504 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,693 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,500 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,940 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,984 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,743 |
| "Land" Countries | 0 | - | 4.98 | 336,687 |
| Flags of North and South America | 0 | - | 4.99 | 373,209 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,612 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,683 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 305,116 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,544 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,994 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,447 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,465 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,653 |
| Countries with Z | 0 | - | 4.98 | 290,862 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,841 |
| Countries that Border China | 0 | - | 4.96 | 263,209 |
| Longest International Borders | 0 | - | 4.99 | 264,966 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,333 |
| Europe Capital to Country | 0 | - | 4.99 | 250,376 |
| EU Countries Quiz | 0 | - | 4.99 | 274,385 |
| World Currency Quiz | 0 | - | 4.92 | 303,192 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,449 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,485 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,444 |
| Countries with Five Letters | 0 | - | 4.96 | 281,645 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,935 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,014 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,438 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,242 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,821 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,413 |
| Official Cities in the UK | 0 | - | 4.89 | 283,828 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,588 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,069 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,412 |
| Megacities on a World Map | 0 | - | 4.98 | 254,645 |
| World Capitals by Map | 0 | - | 5.00 | 286,532 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 309,564 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,069 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,026 |
| NATO Countries | 0 | - | 4.98 | 280,532 |
| Flags of Oceania | 0 | - | 5.00 | 259,532 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,979 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,028 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,244 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,468 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,939 |
| Countries in World War I | 0 | - | 4.88 | 228,182 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,620 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,441 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,237 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,085 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,185 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,333 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,867 |
| Countries with Megacities | 0 | - | 4.99 | 263,551 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,371 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,709 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,631 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,496 |
| Country Chain | 0 | - | 4.96 | 217,122 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,927 |
| European Countries by Clue | 0 | - | 4.92 | 183,661 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,792 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,026 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,104 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,693 |
| World's Busiest Airports | 0 | - | 4.96 | 233,755 |
| Independence from Whom | 0 | - | 4.99 | 211,753 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,421 |
| Every European Country Shape | 0 | - | 4.96 | 201,776 |
| Islands by Country #1 | 0 | - | 4.88 | 175,304 |
| Countries in their Native Language | 0 | - | 4.99 | 198,482 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,897 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,725 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,395 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,748 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,872 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,824 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,654 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,759 |
| Countries with Six Letters | 0 | - | 4.94 | 213,026 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,672 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,080 |
