| Island Countries | 0 | - | 4.99 | 707,966 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,426 |
| European Countries by Clue | 0 | - | 4.92 | 182,463 |
| Countries by Military Spending | 0 | - | 4.93 | 176,558 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,894 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,993,134 |
| US States Quiz | 0 | - | 5.00 | 16,725,033 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,592,360 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,855 |
| World Capitals Quiz | 0 | - | 5.00 | 5,037,629 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,607 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,804,657 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,853 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,527,860 |
| Random Capital to Country | 0 | - | 4.99 | 2,579,842 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,087 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,080 |
| All Country Flags of the World | 0 | - | 5.00 | 3,610,686 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,824 |
| Countries that Start with B | 0 | - | 4.95 | 2,281,718 |
| Countries that Start with A | 0 | - | 4.97 | 2,148,998 |
| Countries of Africa | 0 | - | 5.00 | 2,511,805 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,949 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,679,184 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,115 |
| Countries that Start with C | 0 | - | 4.96 | 1,811,846 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,880 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,900 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,589 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,573,107 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,505 |
| Countries that Start with G | 0 | - | 4.97 | 1,494,137 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,444 |
| Countries that Start with E | 0 | - | 4.95 | 1,368,760 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,047 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,072 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,294 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,485 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,669 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,128 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,767 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,095 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,891 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,634 |
| Random Country to Capital | 0 | - | 4.98 | 912,667 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,915 |
| Biggest Cities in the United States | 0 | - | 4.93 | 968,179 |
| Asia Map Quiz | 0 | - | 4.99 | 908,104 |
| Countries that Start with U | 0 | - | 4.97 | 900,510 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,452 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,420 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,179 |
| Counties of England | 0 | - | 4.97 | 790,197 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,544 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,263 |
| Top World Languages | 0 | - | 4.92 | 814,310 |
| Countries of South America | 0 | - | 5.00 | 916,297 |
| Africa Capitals Quiz | 0 | - | 4.99 | 731,345 |
| Asia Capitals Quiz | 0 | - | 4.98 | 686,882 |
| Countries that Start with K | 0 | - | 4.97 | 810,181 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,529 |
| US States with an Empty Map | 0 | - | 5.00 | 619,594 |
| Countries that Start with V | 0 | - | 4.98 | 605,628 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,540 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,426 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,623 |
| Countries that Start with D | 0 | - | 4.96 | 702,578 |
| Countries That Border Russia | 0 | - | 4.98 | 459,491 |
| One Border Countries | 0 | - | 4.98 | 465,004 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,123 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,781 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,274 |
| Countries with Four Letters | 0 | - | 4.99 | 419,046 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,170 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,167 |
| Countries Bordering France | 0 | - | 4.83 | 400,135 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,023 |
| Northernmost Countries | 0 | - | 4.99 | 358,220 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,614 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,449 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,356 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,496 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,285 |
| Landlocked Countries | 0 | - | 4.99 | 414,491 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,615 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,657 |
| Australia Map Quiz | 0 | - | 4.94 | 342,737 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,159 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,145 |
| Majority Muslim Countries | 0 | - | 4.98 | 369,330 |
| Countries that Start with H | 0 | - | 4.96 | 598,803 |
| Countries that Start with J | 0 | - | 4.98 | 596,851 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,818 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,163 |
| "Land" Countries | 0 | - | 4.98 | 333,897 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,564 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,818 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,538 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,700 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,828 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,351 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,152 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,519 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,497 |
| Countries with Z | 0 | - | 4.98 | 288,072 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,400 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,311 |
| Flags of North and South America | 0 | - | 4.99 | 368,226 |
| EU Countries Quiz | 0 | - | 4.99 | 270,446 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,620 |
| Countries that Border China | 0 | - | 4.96 | 261,988 |
| French-Speaking Countries | 0 | - | 4.85 | 269,061 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,876 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,332 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,370 |
| Every Country Shape | 0 | - | 5.00 | 459,822 |
| Europe Capital to Country | 0 | - | 4.99 | 248,209 |
| Longest International Borders | 0 | - | 4.99 | 263,964 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,919 |
| Biggest Cities by Language | 0 | - | 4.96 | 240,525 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,050 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,888 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,990 |
| Megacities on a World Map | 0 | - | 4.98 | 251,369 |
| World Currency Quiz | 0 | - | 4.92 | 299,090 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,578 |
| NATO Countries | 0 | - | 4.98 | 276,515 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,036 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,412 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,469 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,665 |
| Official Cities in the UK | 0 | - | 4.89 | 280,988 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,349 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,337 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,645 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,577 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,636 |
| Countries with Megacities | 0 | - | 4.99 | 247,672 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,989 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,194 |
| World Capitals by Map | 0 | - | 5.00 | 283,860 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,032 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,871 |
| World's Busiest Airports | 0 | - | 4.94 | 211,196 |
| Country Chain | 0 | - | 4.96 | 215,913 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,617 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,318 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,793 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,142 |
| Independence from Whom | 0 | - | 4.99 | 209,927 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,679 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,774 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,709 |
| Countries with Six Letters | 0 | - | 4.93 | 210,546 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,699 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,568 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,677 |
| Flags of Oceania | 0 | - | 5.00 | 255,806 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,709 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,206 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,066 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,478 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,720 |
| Countries in their Native Language | 0 | - | 4.99 | 196,816 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,485 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,538 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,498 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,508 |
| Monarchies of the World | 0 | - | 4.94 | 166,869 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,662 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 190,963 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,565 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,175 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,526 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,145 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,054 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,310 |
| Countries That End in Y | 0 | - | 4.90 | 185,252 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,459 |
| Olympic Host Countries | 0 | - | 4.98 | 199,055 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,056 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,997 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,255 |
| Every European Country Shape | 0 | - | 4.96 | 200,398 |
| Countries of the Middle East | 0 | - | 4.96 | 199,203 |
| Countries by Official Language | 0 | - | 4.95 | 192,960 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,309 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,469 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,831 |
| Counties of Ireland | 0 | - | 4.92 | 193,342 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,577 |
| Countries Bordering India | 0 | - | 4.98 | 162,674 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,731 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,545 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,777 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,704 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,475 |
| European Cities by Clue | 0 | - | 4.70 | 88,848 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,986 |
| Islands by Country #2 | 0 | - | 4.80 | 77,053 |
