| Island Countries | 0 | - | 4.99 | 710,635 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,567 |
| European Countries by Clue | 0 | - | 4.92 | 183,700 |
| Countries by Military Spending | 0 | - | 4.93 | 177,835 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,725 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,499,801 |
| US States Quiz | 0 | - | 5.00 | 16,888,532 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,626,511 |
| United States Map Quiz | 0 | - | 4.98 | 4,160,340 |
| World Capitals Quiz | 0 | - | 5.00 | 5,077,142 |
| Europe Map Quiz | 0 | - | 5.00 | 4,765,429 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,830,771 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,018 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,538,069 |
| Random Capital to Country | 0 | - | 4.99 | 2,592,456 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,117 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,986 |
| All Country Flags of the World | 0 | - | 5.00 | 3,669,506 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,102,763 |
| Countries that Start with B | 0 | - | 4.95 | 2,295,614 |
| Countries that Start with A | 0 | - | 4.98 | 2,163,932 |
| Countries of Africa | 0 | - | 5.00 | 2,539,553 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,678 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,690,633 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,377 |
| Countries that Start with C | 0 | - | 4.96 | 1,823,061 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,703 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,694 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,539 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,587,791 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,873,611 |
| Countries that Start with G | 0 | - | 4.97 | 1,504,189 |
| Countries that Start with M | 0 | - | 4.97 | 1,382,381 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,988 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,323 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,534 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,946 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,767 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,533 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,345 |
| Countries that Start with N | 0 | - | 4.93 | 1,118,360 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,245,417 |
| Countries that Start with L | 0 | - | 4.98 | 1,091,347 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,484 |
| Random Country to Capital | 0 | - | 4.98 | 921,224 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,345 |
| Biggest Cities in the United States | 0 | - | 4.94 | 979,230 |
| Asia Map Quiz | 0 | - | 4.99 | 917,523 |
| Countries that Start with U | 0 | - | 4.97 | 904,918 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,009 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,024,069 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,748 |
| Counties of England | 0 | - | 4.97 | 797,563 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,795 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,830 |
| Top World Languages | 0 | - | 4.92 | 822,851 |
| Countries of South America | 0 | - | 5.00 | 925,792 |
| Africa Capitals Quiz | 0 | - | 4.99 | 738,306 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,551 |
| Countries that Start with K | 0 | - | 4.97 | 816,338 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,741 |
| US States with an Empty Map | 0 | - | 5.00 | 625,037 |
| Countries that Start with V | 0 | - | 4.98 | 609,627 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,948 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,173 |
| Flags of Asia Quiz | 0 | - | 4.99 | 614,161 |
| Countries that Start with D | 0 | - | 4.96 | 710,327 |
| Countries That Border Russia | 0 | - | 4.98 | 461,956 |
| One Border Countries | 0 | - | 4.98 | 468,901 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,020 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,765 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,584 |
| Countries with Four Letters | 0 | - | 4.99 | 422,780 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,675 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,080 |
| Countries Bordering France | 0 | - | 4.83 | 402,739 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,530 |
| Northernmost Countries | 0 | - | 4.99 | 361,485 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,632 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,210 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,594 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,215 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,810 |
| Landlocked Countries | 0 | - | 4.99 | 420,996 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,419 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,610 |
| Australia Map Quiz | 0 | - | 4.95 | 344,761 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,346 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,998 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,727 |
| Countries that Start with H | 0 | - | 4.96 | 605,283 |
| Countries that Start with J | 0 | - | 4.98 | 602,942 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,649 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,605 |
| "Land" Countries | 0 | - | 4.98 | 336,972 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,002 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,993 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,905 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,147 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,824 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,886 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,738 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,504 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,889 |
| Countries with Z | 0 | - | 4.98 | 291,102 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,098 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,948 |
| Flags of North and South America | 0 | - | 4.99 | 373,487 |
| EU Countries Quiz | 0 | - | 4.99 | 274,631 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,670 |
| Countries that Border China | 0 | - | 4.96 | 263,278 |
| French-Speaking Countries | 0 | - | 4.85 | 270,635 |
| Countries with Five Letters | 0 | - | 4.96 | 281,932 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,295 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,685 |
| Every Country Shape | 0 | - | 5.00 | 466,226 |
| Europe Capital to Country | 0 | - | 4.99 | 250,489 |
| Longest International Borders | 0 | - | 4.99 | 265,011 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,599 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,646 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,712 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,534 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,082 |
| Megacities on a World Map | 0 | - | 4.98 | 254,824 |
| World Currency Quiz | 0 | - | 4.92 | 303,426 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,879 |
| NATO Countries | 0 | - | 4.98 | 280,753 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,977 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,428 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,721 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,048 |
| Official Cities in the UK | 0 | - | 4.89 | 284,029 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,186 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,014 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,107 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,128 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,062 |
| Countries with Megacities | 0 | - | 4.99 | 263,834 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,490 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,020 |
| World Capitals by Map | 0 | - | 5.00 | 286,730 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,764 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,219 |
| World's Busiest Airports | 0 | - | 4.96 | 234,029 |
| Country Chain | 0 | - | 4.96 | 217,187 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,517 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,235 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,103 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,785 |
| Independence from Whom | 0 | - | 4.99 | 211,848 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,541 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,741 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,529 |
| Countries with Six Letters | 0 | - | 4.94 | 213,249 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,800 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,284 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,722 |
| Flags of Oceania | 0 | - | 5.00 | 259,719 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,508 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,498 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,706 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,430 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,125 |
| Countries in their Native Language | 0 | - | 4.99 | 198,542 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,139 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,459 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,333 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,718 |
| Monarchies of the World | 0 | - | 4.94 | 168,873 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,454 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,465 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,755 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,354 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,284 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,834 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,944 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,037 |
| Countries That End in Y | 0 | - | 4.91 | 185,802 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,532 |
| Olympic Host Countries | 0 | - | 4.98 | 200,871 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,921 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,573 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,035 |
| Every European Country Shape | 0 | - | 4.96 | 201,909 |
| Countries of the Middle East | 0 | - | 4.96 | 201,293 |
| Countries by Official Language | 0 | - | 4.95 | 195,040 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,013 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,501 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,620 |
| Counties of Ireland | 0 | - | 4.92 | 195,511 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,007 |
| Countries Bordering India | 0 | - | 4.98 | 163,455 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,644 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,907 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,982 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,600 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,868 |
| European Cities by Clue | 0 | - | 4.70 | 89,066 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,206 |
| Islands by Country #2 | 0 | - | 4.80 | 77,465 |
