| Island Countries | 0 | - | 4.99 | 708,091 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,505 |
| European Countries by Clue | 0 | - | 4.92 | 182,500 |
| Countries by Military Spending | 0 | - | 4.93 | 176,611 |
| Countries by Three Words #2 | 0 | - | 4.97 | 199,030 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,017,174 |
| US States Quiz | 0 | - | 5.00 | 16,733,116 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,594,332 |
| United States Map Quiz | 0 | - | 4.98 | 4,144,644 |
| World Capitals Quiz | 0 | - | 5.00 | 5,039,752 |
| Europe Map Quiz | 0 | - | 5.00 | 4,737,287 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,805,882 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,618 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,528,371 |
| Random Capital to Country | 0 | - | 4.99 | 2,580,408 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,726,704 |
| Africa Map Quiz | 0 | - | 5.00 | 2,106,685 |
| All Country Flags of the World | 0 | - | 5.00 | 3,613,411 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,090,743 |
| Countries that Start with B | 0 | - | 4.95 | 2,282,421 |
| Countries that Start with A | 0 | - | 4.98 | 2,149,777 |
| Countries of Africa | 0 | - | 5.00 | 2,513,040 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,253 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,679,782 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,450 |
| Countries that Start with C | 0 | - | 4.96 | 1,812,405 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,377,384 |
| Countries that Start with S | 0 | - | 4.98 | 1,746,401 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,164 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,573,839 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,852,556 |
| Countries that Start with G | 0 | - | 4.97 | 1,494,650 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,830 |
| Countries that Start with E | 0 | - | 4.95 | 1,369,241 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,395 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,214 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,681 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,836 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,118 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,377 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,142 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,229,928 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,222 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,788 |
| Random Country to Capital | 0 | - | 4.98 | 913,051 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,200 |
| Biggest Cities in the United States | 0 | - | 4.93 | 968,750 |
| Asia Map Quiz | 0 | - | 4.99 | 908,486 |
| Countries that Start with U | 0 | - | 4.97 | 900,716 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,067 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,014,136 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,360 |
| Counties of England | 0 | - | 4.97 | 790,508 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,757 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,520 |
| Top World Languages | 0 | - | 4.92 | 814,736 |
| Countries of South America | 0 | - | 5.00 | 916,934 |
| Africa Capitals Quiz | 0 | - | 4.99 | 731,764 |
| Asia Capitals Quiz | 0 | - | 4.98 | 687,278 |
| Countries that Start with K | 0 | - | 4.97 | 810,470 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,671 |
| US States with an Empty Map | 0 | - | 5.00 | 619,846 |
| Countries that Start with V | 0 | - | 4.98 | 605,824 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,801 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,510 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,942 |
| Countries that Start with D | 0 | - | 4.96 | 702,976 |
| Countries That Border Russia | 0 | - | 4.98 | 459,633 |
| One Border Countries | 0 | - | 4.98 | 465,307 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,220 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,023 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,469 |
| Countries with Four Letters | 0 | - | 4.99 | 419,241 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,358 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,289 |
| Countries Bordering France | 0 | - | 4.83 | 400,347 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,160 |
| Northernmost Countries | 0 | - | 4.99 | 358,425 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,697 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,563 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,455 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,581 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,330 |
| Landlocked Countries | 0 | - | 4.99 | 414,851 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,749 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,775 |
| Australia Map Quiz | 0 | - | 4.94 | 342,804 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,261 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,394 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,294 |
| Countries that Start with H | 0 | - | 4.96 | 599,115 |
| Countries that Start with J | 0 | - | 4.98 | 597,178 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,953 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,272 |
| "Land" Countries | 0 | - | 4.98 | 333,969 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,636 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 283,909 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,723 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,779 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,946 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,686 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,276 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,585 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 263,659 |
| Countries with Z | 0 | - | 4.98 | 288,147 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,506 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,384 |
| Flags of North and South America | 0 | - | 4.99 | 368,561 |
| EU Countries Quiz | 0 | - | 4.99 | 270,666 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,747 |
| Countries that Border China | 0 | - | 4.96 | 262,066 |
| French-Speaking Countries | 0 | - | 4.85 | 269,153 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,939 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,388 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,516 |
| Every Country Shape | 0 | - | 5.00 | 460,127 |
| Europe Capital to Country | 0 | - | 4.99 | 248,329 |
| Longest International Borders | 0 | - | 4.99 | 264,020 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,137 |
| Biggest Cities by Language | 0 | - | 4.96 | 242,837 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,406 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,966 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,041 |
| Megacities on a World Map | 0 | - | 4.98 | 251,534 |
| World Currency Quiz | 0 | - | 4.92 | 299,288 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,672 |
| NATO Countries | 0 | - | 4.98 | 276,921 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,069 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,538 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,549 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,733 |
| Official Cities in the UK | 0 | - | 4.89 | 281,151 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,437 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,381 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,878 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,657 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,685 |
| Countries with Megacities | 0 | - | 4.99 | 247,888 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,073 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,294 |
| World Capitals by Map | 0 | - | 5.00 | 284,021 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,062 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,951 |
| World's Busiest Airports | 0 | - | 4.94 | 214,399 |
| Country Chain | 0 | - | 4.96 | 215,981 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,707 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,512 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,861 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,207 |
| Independence from Whom | 0 | - | 4.99 | 210,014 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,819 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,808 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,776 |
| Countries with Six Letters | 0 | - | 4.93 | 210,610 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,740 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,601 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,750 |
| Flags of Oceania | 0 | - | 5.00 | 255,983 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,805 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,301 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,098 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,515 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,881 |
| Countries in their Native Language | 0 | - | 4.99 | 196,889 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,570 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,830 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,538 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,563 |
| Monarchies of the World | 0 | - | 4.94 | 166,963 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,706 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,039 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,622 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,207 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,602 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,172 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,107 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,467 |
| Countries That End in Y | 0 | - | 4.90 | 185,268 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,534 |
| Olympic Host Countries | 0 | - | 4.98 | 199,118 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,158 |
| Regions of Countries #1 | 0 | - | 4.97 | 159,026 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,299 |
| Every European Country Shape | 0 | - | 4.96 | 200,454 |
| Countries of the Middle East | 0 | - | 4.96 | 199,294 |
| Countries by Official Language | 0 | - | 4.95 | 193,038 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,356 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,551 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,870 |
| Counties of Ireland | 0 | - | 4.92 | 193,463 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,631 |
| Countries Bordering India | 0 | - | 4.98 | 162,947 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,769 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,565 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,811 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,732 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,487 |
| European Cities by Clue | 0 | - | 4.70 | 88,856 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,997 |
| Islands by Country #2 | 0 | - | 4.80 | 77,073 |
