| Island Countries | 0 | - | 4.99 | 711,340 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,028 |
| European Countries by Clue | 0 | - | 4.92 | 183,897 |
| Countries by Military Spending | 0 | - | 4.93 | 178,539 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,486 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,648,862 |
| US States Quiz | 0 | - | 5.00 | 16,932,842 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,637,161 |
| United States Map Quiz | 0 | - | 4.98 | 4,164,848 |
| World Capitals Quiz | 0 | - | 5.00 | 5,088,426 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,434 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,965 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,753 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,541,208 |
| Random Capital to Country | 0 | - | 4.99 | 2,596,038 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,621 |
| Africa Map Quiz | 0 | - | 5.00 | 2,123,065 |
| All Country Flags of the World | 0 | - | 5.00 | 3,686,623 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,107,070 |
| Countries that Start with B | 0 | - | 4.95 | 2,299,668 |
| Countries that Start with A | 0 | - | 4.98 | 2,168,504 |
| Countries of Africa | 0 | - | 5.00 | 2,547,658 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,075 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,694,099 |
| South America Map Quiz | 0 | - | 5.00 | 1,552,441 |
| Countries that Start with C | 0 | - | 4.96 | 1,826,310 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,297 |
| Countries that Start with S | 0 | - | 4.98 | 1,758,643 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,558 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,592,696 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,885 |
| Countries that Start with G | 0 | - | 4.97 | 1,507,005 |
| Countries that Start with M | 0 | - | 4.97 | 1,384,718 |
| Countries that Start with E | 0 | - | 4.95 | 1,380,739 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,736 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,179 |
| Countries that Start with I | 0 | - | 4.92 | 1,291,129 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,845 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,945 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,818 |
| Countries that Start with N | 0 | - | 4.93 | 1,120,516 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,358 |
| Countries that Start with L | 0 | - | 4.98 | 1,093,462 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,365 |
| Random Country to Capital | 0 | - | 4.98 | 923,788 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,893 |
| Biggest Cities in the United States | 0 | - | 4.94 | 982,181 |
| Asia Map Quiz | 0 | - | 4.99 | 920,650 |
| Countries that Start with U | 0 | - | 4.97 | 906,128 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,397 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,863 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,772 |
| Counties of England | 0 | - | 4.97 | 799,797 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,201 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,790 |
| Top World Languages | 0 | - | 4.92 | 825,603 |
| Countries of South America | 0 | - | 5.00 | 928,541 |
| Africa Capitals Quiz | 0 | - | 4.99 | 740,649 |
| Asia Capitals Quiz | 0 | - | 4.98 | 695,513 |
| Countries that Start with K | 0 | - | 4.97 | 818,041 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,460 |
| US States with an Empty Map | 0 | - | 5.00 | 626,465 |
| Countries that Start with V | 0 | - | 4.98 | 610,507 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,272 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,528 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,734 |
| Countries that Start with D | 0 | - | 4.96 | 712,721 |
| Countries That Border Russia | 0 | - | 4.98 | 463,099 |
| One Border Countries | 0 | - | 4.98 | 470,342 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,574 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,112 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,844 |
| Countries with Four Letters | 0 | - | 4.99 | 423,770 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,407 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,913 |
| Countries Bordering France | 0 | - | 4.83 | 403,827 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,309 |
| Northernmost Countries | 0 | - | 4.99 | 362,373 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,306 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,765 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,914 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,933 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,349 |
| Landlocked Countries | 0 | - | 4.99 | 422,816 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,510 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,201 |
| Australia Map Quiz | 0 | - | 4.95 | 345,401 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,023 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,196 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,010 |
| Countries that Start with H | 0 | - | 4.96 | 606,908 |
| Countries that Start with J | 0 | - | 4.98 | 604,456 |
| World Capitals by Proximity | 0 | - | 4.90 | 332,482 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,156 |
| "Land" Countries | 0 | - | 4.98 | 337,578 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,426 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,604 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,203 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,582 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,276 |
| Flags of Africa Quiz | 0 | - | 5.00 | 474,131 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,697 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,830 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,060 |
| Countries with Z | 0 | - | 4.98 | 291,672 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,614 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,387 |
| Flags of North and South America | 0 | - | 4.99 | 374,842 |
| EU Countries Quiz | 0 | - | 4.99 | 276,019 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,269 |
| Countries that Border China | 0 | - | 4.96 | 263,683 |
| French-Speaking Countries | 0 | - | 4.85 | 271,055 |
| Countries with Five Letters | 0 | - | 4.96 | 282,827 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,578 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,726 |
| Every Country Shape | 0 | - | 5.00 | 468,337 |
| Europe Capital to Country | 0 | - | 4.99 | 251,140 |
| Longest International Borders | 0 | - | 4.99 | 265,344 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,969 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,145 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,360 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,047 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,482 |
| Megacities on a World Map | 0 | - | 4.98 | 255,665 |
| World Currency Quiz | 0 | - | 4.92 | 304,750 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,268 |
| NATO Countries | 0 | - | 4.98 | 281,933 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,211 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,009 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,154 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,661 |
| Official Cities in the UK | 0 | - | 4.89 | 284,881 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,707 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,206 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,500 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,525 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,376 |
| Countries with Megacities | 0 | - | 4.99 | 265,165 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,952 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,529 |
| World Capitals by Map | 0 | - | 5.00 | 287,854 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,975 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,583 |
| World's Busiest Airports | 0 | - | 4.96 | 235,440 |
| Country Chain | 0 | - | 4.96 | 217,774 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,095 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,175 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,539 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,173 |
| Independence from Whom | 0 | - | 4.99 | 212,296 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,911 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,347 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,725 |
| Countries with Six Letters | 0 | - | 4.94 | 213,762 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,970 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,459 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,215 |
| Flags of Oceania | 0 | - | 5.00 | 260,975 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,999 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,837 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,921 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,692 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,167 |
| Countries in their Native Language | 0 | - | 4.99 | 199,206 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,465 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,961 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,609 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,033 |
| Monarchies of the World | 0 | - | 4.94 | 169,445 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,831 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,914 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,052 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,656 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,835 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,986 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,217 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,878 |
| Countries That End in Y | 0 | - | 4.91 | 185,929 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,963 |
| Olympic Host Countries | 0 | - | 4.98 | 201,266 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,487 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,809 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,288 |
| Every European Country Shape | 0 | - | 4.96 | 202,356 |
| Countries of the Middle East | 0 | - | 4.96 | 201,868 |
| Countries by Official Language | 0 | - | 4.95 | 195,429 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,205 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,775 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,844 |
| Counties of Ireland | 0 | - | 4.92 | 196,301 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,286 |
| Countries Bordering India | 0 | - | 4.98 | 163,616 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,800 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,238 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,737 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,278 |
| European Cities by Clue | 0 | - | 4.70 | 89,108 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,011 |
| Islands by Country #2 | 0 | - | 4.80 | 77,619 |
