| Island Countries | 0 | - | 4.99 | 707,865 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,374 |
| European Countries by Clue | 0 | - | 4.92 | 182,438 |
| Countries by Military Spending | 0 | - | 4.93 | 176,523 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,795 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,972,102 |
| US States Quiz | 0 | - | 5.00 | 16,718,935 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,591,169 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,440 |
| World Capitals Quiz | 0 | - | 5.00 | 5,035,729 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,395 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,803,842 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,133 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,527,483 |
| Random Capital to Country | 0 | - | 4.99 | 2,579,354 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,152 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,675 |
| All Country Flags of the World | 0 | - | 5.00 | 3,608,326 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,323 |
| Countries that Start with B | 0 | - | 4.95 | 2,281,178 |
| Countries that Start with A | 0 | - | 4.97 | 2,148,369 |
| Countries of Africa | 0 | - | 5.00 | 2,510,712 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,854 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,678,817 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,906 |
| Countries that Start with C | 0 | - | 4.96 | 1,811,400 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,697 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,528 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,163 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,572,534 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,590 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,767 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,123 |
| Countries that Start with E | 0 | - | 4.95 | 1,368,388 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,701 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,014 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,008 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,229 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,338 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,959 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,467 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,522 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,568 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,538 |
| Random Country to Capital | 0 | - | 4.98 | 912,389 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,732 |
| Biggest Cities in the United States | 0 | - | 4.93 | 967,812 |
| Asia Map Quiz | 0 | - | 4.99 | 907,844 |
| Countries that Start with U | 0 | - | 4.97 | 900,338 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,947 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,012,980 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,067 |
| Counties of England | 0 | - | 4.97 | 789,943 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,408 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,010 |
| Top World Languages | 0 | - | 4.92 | 813,959 |
| Countries of South America | 0 | - | 5.00 | 915,918 |
| Africa Capitals Quiz | 0 | - | 4.99 | 730,979 |
| Asia Capitals Quiz | 0 | - | 4.98 | 686,622 |
| Countries that Start with K | 0 | - | 4.97 | 809,951 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,398 |
| US States with an Empty Map | 0 | - | 5.00 | 619,456 |
| Countries that Start with V | 0 | - | 4.98 | 605,497 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,381 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,362 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,352 |
| Countries that Start with D | 0 | - | 4.96 | 702,292 |
| Countries That Border Russia | 0 | - | 4.98 | 459,228 |
| One Border Countries | 0 | - | 4.98 | 464,870 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,071 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,659 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,177 |
| Countries with Four Letters | 0 | - | 4.99 | 418,892 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,062 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,060 |
| Countries Bordering France | 0 | - | 4.83 | 399,955 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,917 |
| Northernmost Countries | 0 | - | 4.99 | 358,063 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,536 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,364 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,281 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,445 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,241 |
| Landlocked Countries | 0 | - | 4.99 | 414,263 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,528 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,587 |
| Australia Map Quiz | 0 | - | 4.94 | 342,680 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,069 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,980 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,856 |
| Countries that Start with H | 0 | - | 4.96 | 598,569 |
| Countries that Start with J | 0 | - | 4.98 | 596,623 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,718 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,082 |
| "Land" Countries | 0 | - | 4.98 | 333,816 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,477 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,781 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,374 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,664 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,757 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,169 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,082 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,480 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,409 |
| Countries with Z | 0 | - | 4.98 | 288,018 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,326 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,252 |
| Flags of North and South America | 0 | - | 4.99 | 368,060 |
| EU Countries Quiz | 0 | - | 4.99 | 270,295 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,522 |
| Countries that Border China | 0 | - | 4.96 | 261,943 |
| French-Speaking Countries | 0 | - | 4.85 | 268,999 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,812 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,311 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,243 |
| Every Country Shape | 0 | - | 5.00 | 459,551 |
| Europe Capital to Country | 0 | - | 4.99 | 248,140 |
| Longest International Borders | 0 | - | 4.99 | 263,921 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,762 |
| Biggest Cities by Language | 0 | - | 4.96 | 233,556 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,794 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,842 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,949 |
| Megacities on a World Map | 0 | - | 4.98 | 251,232 |
| World Currency Quiz | 0 | - | 4.92 | 298,908 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,496 |
| NATO Countries | 0 | - | 4.98 | 276,274 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,986 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,335 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,425 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,609 |
| Official Cities in the UK | 0 | - | 4.89 | 280,865 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,284 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,307 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,444 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,531 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,600 |
| Countries with Megacities | 0 | - | 4.99 | 247,500 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,946 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,131 |
| World Capitals by Map | 0 | - | 5.00 | 283,692 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,009 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,783 |
| World's Busiest Airports | 0 | - | 4.94 | 210,731 |
| Country Chain | 0 | - | 4.96 | 215,868 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,552 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,199 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,747 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,060 |
| Independence from Whom | 0 | - | 4.99 | 209,859 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,566 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,737 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,693 |
| Countries with Six Letters | 0 | - | 4.93 | 210,488 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,677 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,549 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,604 |
| Flags of Oceania | 0 | - | 5.00 | 255,676 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,651 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,167 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,036 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,445 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,592 |
| Countries in their Native Language | 0 | - | 4.99 | 196,766 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,443 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,501 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,448 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,479 |
| Monarchies of the World | 0 | - | 4.94 | 166,797 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,627 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 190,878 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,536 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,141 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,343 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,133 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,009 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,203 |
| Countries That End in Y | 0 | - | 4.90 | 185,237 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,408 |
| Olympic Host Countries | 0 | - | 4.98 | 199,021 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,950 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,981 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,214 |
| Every European Country Shape | 0 | - | 4.96 | 200,366 |
| Countries of the Middle East | 0 | - | 4.96 | 199,138 |
| Countries by Official Language | 0 | - | 4.95 | 192,913 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,265 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,386 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,789 |
| Counties of Ireland | 0 | - | 4.92 | 193,252 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,540 |
| Countries Bordering India | 0 | - | 4.98 | 162,657 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,700 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,532 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,745 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,689 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,463 |
| European Cities by Clue | 0 | - | 4.70 | 88,844 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,984 |
| Islands by Country #2 | 0 | - | 4.80 | 77,037 |
