| Island Countries | 0 | - | 4.99 | 710,467 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,477 |
| European Countries by Clue | 0 | - | 4.92 | 183,656 |
| Countries by Military Spending | 0 | - | 4.93 | 177,765 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,553 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,470,174 |
| US States Quiz | 0 | - | 5.00 | 16,879,198 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,237 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,828 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,780 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,784 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,433 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,087 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,511 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,768 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,456 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,273 |
| All Country Flags of the World | 0 | - | 5.00 | 3,665,958 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,997 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,695 |
| Countries that Start with A | 0 | - | 4.98 | 2,163,019 |
| Countries of Africa | 0 | - | 5.00 | 2,537,807 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,351 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,689,979 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,993 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,368 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,144 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,082 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,933 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,731 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,351 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,562 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,888 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,417 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,907 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,386 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,484 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,291 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,049 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,084 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,903 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,556 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,910 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,216 |
| Random Country to Capital | 0 | - | 4.98 | 920,761 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,988 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,625 |
| Asia Map Quiz | 0 | - | 4.99 | 917,052 |
| Countries that Start with U | 0 | - | 4.97 | 904,616 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,282 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,490 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,537 |
| Counties of England | 0 | - | 4.97 | 797,035 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,543 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,527 |
| Top World Languages | 0 | - | 4.92 | 822,398 |
| Countries of South America | 0 | - | 5.00 | 925,276 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,871 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,069 |
| Countries that Start with K | 0 | - | 4.97 | 815,943 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,614 |
| US States with an Empty Map | 0 | - | 5.00 | 624,740 |
| Countries that Start with V | 0 | - | 4.98 | 609,436 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,679 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,105 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,761 |
| Countries that Start with D | 0 | - | 4.96 | 709,814 |
| Countries That Border Russia | 0 | - | 4.98 | 461,799 |
| One Border Countries | 0 | - | 4.98 | 468,693 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,808 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,528 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,326 |
| Countries with Four Letters | 0 | - | 4.99 | 422,536 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,528 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,929 |
| Countries Bordering France | 0 | - | 4.83 | 402,614 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,396 |
| Northernmost Countries | 0 | - | 4.99 | 361,291 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,531 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,087 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,473 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,099 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,686 |
| Landlocked Countries | 0 | - | 4.99 | 420,665 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,280 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,487 |
| Australia Map Quiz | 0 | - | 4.95 | 344,661 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,219 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,748 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,451 |
| Countries that Start with H | 0 | - | 4.96 | 604,898 |
| Countries that Start with J | 0 | - | 4.98 | 602,585 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,485 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,491 |
| "Land" Countries | 0 | - | 4.98 | 336,615 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,931 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,831 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,661 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,978 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,733 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,527 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,604 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,440 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,638 |
| Countries with Z | 0 | - | 4.98 | 290,816 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,984 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,837 |
| Flags of North and South America | 0 | - | 4.99 | 373,187 |
| EU Countries Quiz | 0 | - | 4.99 | 274,362 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,536 |
| Countries that Border China | 0 | - | 4.96 | 263,206 |
| French-Speaking Countries | 0 | - | 4.85 | 270,541 |
| Countries with Five Letters | 0 | - | 4.96 | 281,584 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,240 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,444 |
| Every Country Shape | 0 | - | 5.00 | 465,610 |
| Europe Capital to Country | 0 | - | 4.99 | 250,352 |
| Longest International Borders | 0 | - | 4.99 | 264,960 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,311 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,429 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,407 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,445 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,999 |
| Megacities on a World Map | 0 | - | 4.98 | 254,623 |
| World Currency Quiz | 0 | - | 4.92 | 303,171 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,810 |
| NATO Countries | 0 | - | 4.98 | 280,502 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,930 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,325 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,581 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,959 |
| Official Cities in the UK | 0 | - | 4.89 | 283,809 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,082 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,974 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,022 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,062 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,018 |
| Countries with Megacities | 0 | - | 4.99 | 263,527 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,407 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,926 |
| World Capitals by Map | 0 | - | 5.00 | 286,512 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,706 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,864 |
| World's Busiest Airports | 0 | - | 4.96 | 233,721 |
| Country Chain | 0 | - | 4.96 | 217,117 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,409 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,060 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,021 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,716 |
| Independence from Whom | 0 | - | 4.99 | 211,746 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,459 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,689 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,491 |
| Countries with Six Letters | 0 | - | 4.94 | 212,977 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,755 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,235 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,627 |
| Flags of Oceania | 0 | - | 5.00 | 259,520 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,412 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,433 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,671 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,367 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,899 |
| Countries in their Native Language | 0 | - | 4.99 | 198,477 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,075 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,235 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,296 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,575 |
| Monarchies of the World | 0 | - | 4.94 | 168,739 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,172 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,388 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,647 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,268 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,174 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,728 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,891 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,863 |
| Countries That End in Y | 0 | - | 4.91 | 185,757 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,446 |
| Olympic Host Countries | 0 | - | 4.98 | 200,776 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,813 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,545 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,987 |
| Every European Country Shape | 0 | - | 4.96 | 201,764 |
| Countries of the Middle East | 0 | - | 4.96 | 201,213 |
| Countries by Official Language | 0 | - | 4.95 | 194,964 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,963 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,424 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,590 |
| Counties of Ireland | 0 | - | 4.92 | 195,379 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,950 |
| Countries Bordering India | 0 | - | 4.98 | 163,444 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,604 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,877 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,933 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,567 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,851 |
| European Cities by Clue | 0 | - | 4.70 | 89,057 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,194 |
| Islands by Country #2 | 0 | - | 4.80 | 77,439 |
