| Island Countries | 0 | - | 4.99 | 711,632 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,182 |
| European Countries by Clue | 0 | - | 4.92 | 183,965 |
| Countries by Military Spending | 0 | - | 4.93 | 178,678 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,822 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,708,559 |
| US States Quiz | 0 | - | 5.00 | 16,950,182 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,641,211 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,546 |
| World Capitals Quiz | 0 | - | 5.00 | 5,092,975 |
| Europe Map Quiz | 0 | - | 5.00 | 4,778,044 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,840,880 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,748 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,542,422 |
| Random Capital to Country | 0 | - | 4.99 | 2,597,294 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,790,038 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,013 |
| All Country Flags of the World | 0 | - | 5.00 | 3,693,948 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,108,680 |
| Countries that Start with B | 0 | - | 4.95 | 2,301,549 |
| Countries that Start with A | 0 | - | 4.98 | 2,170,442 |
| Countries of Africa | 0 | - | 5.00 | 2,550,892 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,746 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,695,261 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,376 |
| Countries that Start with C | 0 | - | 4.96 | 1,827,700 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,871 |
| Countries that Start with S | 0 | - | 4.98 | 1,759,843 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,791 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,594,520 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,358 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,194 |
| Countries that Start with M | 0 | - | 4.97 | 1,385,666 |
| Countries that Start with E | 0 | - | 4.95 | 1,381,910 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,904 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,708 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,079 |
| Countries that Start with P | 0 | - | 4.94 | 1,219,694 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,994 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,476 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,383 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,252,340 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,340 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,740 |
| Random Country to Capital | 0 | - | 4.98 | 924,886 |
| Countries that Start with T | 0 | - | 4.90 | 1,012,998 |
| Biggest Cities in the United States | 0 | - | 4.94 | 983,614 |
| Asia Map Quiz | 0 | - | 4.99 | 922,173 |
| Countries that Start with U | 0 | - | 4.97 | 906,684 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,685 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,098 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,236 |
| Counties of England | 0 | - | 4.97 | 800,655 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,745 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,257 |
| Top World Languages | 0 | - | 4.92 | 826,756 |
| Countries of South America | 0 | - | 5.00 | 929,587 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,559 |
| Asia Capitals Quiz | 0 | - | 4.98 | 696,532 |
| Countries that Start with K | 0 | - | 4.97 | 818,772 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,716 |
| US States with an Empty Map | 0 | - | 5.00 | 627,080 |
| Countries that Start with V | 0 | - | 4.98 | 610,900 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,779 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,690 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,587 |
| Countries that Start with D | 0 | - | 4.96 | 713,730 |
| Countries That Border Russia | 0 | - | 4.98 | 463,687 |
| One Border Countries | 0 | - | 4.98 | 470,787 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,821 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,601 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,362 |
| Countries with Four Letters | 0 | - | 4.99 | 424,522 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,709 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,303 |
| Countries Bordering France | 0 | - | 4.83 | 404,149 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,602 |
| Northernmost Countries | 0 | - | 4.99 | 362,859 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,556 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,014 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,181 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,104 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,549 |
| Landlocked Countries | 0 | - | 4.99 | 423,543 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,945 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,455 |
| Australia Map Quiz | 0 | - | 4.95 | 345,613 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,308 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,593 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,463 |
| Countries that Start with H | 0 | - | 4.96 | 607,635 |
| Countries that Start with J | 0 | - | 4.98 | 605,123 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,840 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,339 |
| "Land" Countries | 0 | - | 4.98 | 337,791 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,546 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,807 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,772 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,740 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,484 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,080 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,944 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 237,947 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,578 |
| Countries with Z | 0 | - | 4.98 | 291,871 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,843 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,561 |
| Flags of North and South America | 0 | - | 4.99 | 375,412 |
| EU Countries Quiz | 0 | - | 4.99 | 276,482 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,533 |
| Countries that Border China | 0 | - | 4.96 | 263,843 |
| French-Speaking Countries | 0 | - | 4.85 | 271,238 |
| Countries with Five Letters | 0 | - | 4.96 | 283,092 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,952 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,134 |
| Every Country Shape | 0 | - | 5.00 | 468,975 |
| Europe Capital to Country | 0 | - | 4.99 | 251,423 |
| Longest International Borders | 0 | - | 4.99 | 265,480 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,473 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,312 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,973 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,209 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,666 |
| Megacities on a World Map | 0 | - | 4.98 | 255,991 |
| World Currency Quiz | 0 | - | 4.92 | 305,316 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,535 |
| NATO Countries | 0 | - | 4.98 | 282,333 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,317 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,264 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,327 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,875 |
| Official Cities in the UK | 0 | - | 4.89 | 285,244 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,936 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,338 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,674 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,677 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,484 |
| Countries with Megacities | 0 | - | 4.99 | 265,682 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,135 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,841 |
| World Capitals by Map | 0 | - | 5.00 | 288,362 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,058 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,684 |
| World's Busiest Airports | 0 | - | 4.96 | 235,975 |
| Country Chain | 0 | - | 4.96 | 217,899 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,324 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,531 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,963 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,311 |
| Independence from Whom | 0 | - | 4.99 | 212,484 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,046 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,497 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,823 |
| Countries with Six Letters | 0 | - | 4.94 | 213,956 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,043 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,537 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,468 |
| Flags of Oceania | 0 | - | 5.00 | 261,470 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,198 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,962 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,000 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,818 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,539 |
| Countries in their Native Language | 0 | - | 4.99 | 199,358 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,888 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,145 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,680 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,147 |
| Monarchies of the World | 0 | - | 4.94 | 169,643 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,958 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,398 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,276 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,750 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,009 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,047 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,323 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,268 |
| Countries That End in Y | 0 | - | 4.91 | 185,977 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,129 |
| Olympic Host Countries | 0 | - | 4.98 | 201,483 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,842 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,915 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,393 |
| Every European Country Shape | 0 | - | 4.96 | 202,501 |
| Countries of the Middle East | 0 | - | 4.96 | 202,128 |
| Countries by Official Language | 0 | - | 4.95 | 195,575 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,278 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,883 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,903 |
| Counties of Ireland | 0 | - | 4.92 | 196,637 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,415 |
| Countries Bordering India | 0 | - | 4.98 | 163,685 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,861 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,041 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,331 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,803 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,327 |
| European Cities by Clue | 0 | - | 4.70 | 89,124 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,120 |
| Islands by Country #2 | 0 | - | 4.80 | 77,678 |
