| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,120 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,407 |
| Seas on the World Map | 0 | - | 4.96 | 135,370 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,030 |
| World's Longest Rivers | 0 | - | 4.90 | 136,761 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,535 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,473 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,844 |
| North Sea Countries | 0 | - | 4.92 | 87,403 |
| World's Longest Rivers on a Map | 0 | - | 4.91 | 87,817 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,422 |
| Countries With No Rivers | 0 | - | 4.96 | 76,827 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,120 |
| Black Sea Countries | 0 | - | 4.87 | 60,611 |
| South China Sea Countries | 0 | - | 4.78 | 57,708 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,715 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,238 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,762 |
| Caspian Sea Countries | 0 | - | 4.90 | 63,492 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,391 |
| Mississippi River States Empty Map Quiz | 0 | - | 4.82 | 55,971 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,264 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,467 |
| Layers of the Earth and Atmosphere | 0 | - | 4.96 | 50,502 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,477,786 |
| US States Quiz | 0 | - | 5.00 | 16,881,194 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,766 |
| World Capitals Quiz | 0 | - | 5.00 | 5,075,396 |
| Europe Map Quiz | 0 | - | 5.00 | 4,764,144 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,965 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,709 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,339 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,102 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,634 |
| All Country Flags of the World | 0 | - | 5.00 | 3,666,843 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,955 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,405 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,937 |
| Countries of Africa | 0 | - | 5.00 | 2,538,136 |
| Countries that Start with A | 0 | - | 4.98 | 2,163,257 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,546 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,249 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,690,168 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,436 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,086 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,198 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,601 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,092 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,962 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,737 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,027 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,574 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,037 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,618 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,416 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,138 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,735 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,181 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,032 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,431 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,042 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,092 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,250 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,780 |
| Random Country to Capital | 0 | - | 4.98 | 920,893 |
| Countries that Start with U | 0 | - | 4.97 | 904,701 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,401 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,631 |
| Asia Map Quiz | 0 | - | 4.99 | 917,159 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,575 |
| Countries of South America | 0 | - | 5.00 | 925,371 |
| Island Countries | 0 | - | 4.99 | 710,520 |
| Biggest Cities in the World | 0 | - | 4.91 | 799,184 |
| Counties of England | 0 | - | 4.97 | 797,217 |
| Top World Languages | 0 | - | 4.92 | 822,536 |
| Countries that Start with K | 0 | - | 4.97 | 816,061 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,597 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,952 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,591 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,169 |
| Countries that Start with V | 0 | - | 4.98 | 609,495 |
| US States with an Empty Map | 0 | - | 5.00 | 624,804 |
| Countries that Start with D | 0 | - | 4.96 | 709,972 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 578,395 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,826 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,649 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,737 |
| Countries that Start with J | 0 | - | 4.98 | 602,692 |
| Countries That Border Russia | 0 | - | 4.98 | 461,843 |
| Countries that Start with H | 0 | - | 4.96 | 604,999 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,836 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,586 |
| One Border Countries | 0 | - | 4.98 | 468,746 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,314 |
| Countries with Four Letters | 0 | - | 4.99 | 422,601 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,971 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,572 |
| Countries Bordering France | 0 | - | 4.83 | 402,640 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,396 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,127 |
| Northernmost Countries | 0 | - | 4.99 | 361,352 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,557 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,430 |
| Every Country Shape | 0 | - | 5.00 | 465,714 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,114 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,501 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,252 |
| Australia Map Quiz | 0 | - | 4.95 | 344,676 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,798 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,600 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,522 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,512 |
| Landlocked Countries | 0 | - | 4.99 | 420,765 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,522 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,708 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,513 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,953 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,994 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,757 |
| "Land" Countries | 0 | - | 4.98 | 336,780 |
| Flags of North and South America | 0 | - | 4.99 | 373,248 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,631 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,715 |
| Countries of the World with an Empty Map - Hard Version | 0 | - | 5.00 | 305,130 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,571 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,011 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,457 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,492 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,692 |
| Countries with Z | 0 | - | 4.98 | 290,942 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,858 |
| Countries that Border China | 0 | - | 4.96 | 263,217 |
| Longest International Borders | 0 | - | 4.99 | 264,969 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,376 |
| Europe Capital to Country | 0 | - | 4.99 | 250,396 |
| EU Countries Quiz | 0 | - | 4.99 | 274,426 |
| World Currency Quiz | 0 | - | 4.92 | 303,233 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,470 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,501 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,461 |
| Countries with Five Letters | 0 | - | 4.96 | 281,732 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,943 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,029 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,480 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,243 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,827 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,425 |
| Official Cities in the UK | 0 | - | 4.89 | 283,890 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,592 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,077 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,421 |
| Megacities on a World Map | 0 | - | 4.98 | 254,674 |
| World Capitals by Map | 0 | - | 5.00 | 286,553 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 309,605 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,101 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,031 |
| NATO Countries | 0 | - | 4.98 | 280,568 |
| Flags of Oceania | 0 | - | 5.00 | 259,567 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,986 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,032 |
| Shortest Country Name A-Z | 0 | - | 4.99 | 237,261 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,479 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,952 |
| Countries in World War I | 0 | - | 4.88 | 228,196 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,628 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,446 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,246 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,107 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,209 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,345 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,874 |
| Countries with Megacities | 0 | - | 4.99 | 263,600 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,376 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,711 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,642 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,501 |
| Country Chain | 0 | - | 4.96 | 217,130 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,966 |
| European Countries by Clue | 0 | - | 4.92 | 183,672 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,810 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,040 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 224,109 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,698 |
| World's Busiest Airports | 0 | - | 4.96 | 233,822 |
| Independence from Whom | 0 | - | 4.99 | 211,767 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,432 |
| Every European Country Shape | 0 | - | 4.96 | 201,793 |
| Islands by Country #1 | 0 | - | 4.88 | 175,310 |
| Countries in their Native Language | 0 | - | 4.99 | 198,493 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,903 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,740 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,408 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 189,755 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,917 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,837 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,675 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,768 |
| Countries with Six Letters | 0 | - | 4.94 | 213,091 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,675 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,086 |
