| Island Countries | 0 | - | 4.99 | 707,872 |
| Countries by Three Words #1 | 0 | - | 4.95 | 262,380 |
| European Countries by Clue | 0 | - | 4.92 | 182,440 |
| Countries by Military Spending | 0 | - | 4.93 | 176,525 |
| Countries by Three Words #2 | 0 | - | 4.97 | 198,804 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,973,623 |
| US States Quiz | 0 | - | 5.00 | 16,719,446 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,591,294 |
| United States Map Quiz | 0 | - | 4.98 | 4,143,464 |
| World Capitals Quiz | 0 | - | 5.00 | 5,035,881 |
| Europe Map Quiz | 0 | - | 5.00 | 4,734,479 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,803,887 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,183 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,527,514 |
| Random Capital to Country | 0 | - | 4.99 | 2,579,406 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,308 |
| Africa Map Quiz | 0 | - | 5.00 | 2,105,708 |
| All Country Flags of the World | 0 | - | 5.00 | 3,608,526 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,089,354 |
| Countries that Start with B | 0 | - | 4.95 | 2,281,211 |
| Countries that Start with A | 0 | - | 4.97 | 2,148,418 |
| Countries of Africa | 0 | - | 5.00 | 2,510,786 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,441,864 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,678,840 |
| South America Map Quiz | 0 | - | 5.00 | 1,541,941 |
| Countries that Start with C | 0 | - | 4.96 | 1,811,423 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,376,707 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,552 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,194 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,572,569 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,645 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,798 |
| Countries that Start with M | 0 | - | 4.97 | 1,374,150 |
| Countries that Start with E | 0 | - | 4.95 | 1,368,417 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,734 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,021 |
| Countries that Start with I | 0 | - | 4.92 | 1,281,035 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,243 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,362 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,087,971 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,485 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,228,569 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,587 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,545 |
| Random Country to Capital | 0 | - | 4.98 | 912,412 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,740 |
| Biggest Cities in the United States | 0 | - | 4.93 | 967,835 |
| Asia Map Quiz | 0 | - | 4.99 | 907,861 |
| Countries that Start with U | 0 | - | 4.97 | 900,348 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,976 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,013,004 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 730,077 |
| Counties of England | 0 | - | 4.97 | 789,961 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 636,417 |
| Oceania Map Quiz | 0 | - | 4.98 | 636,053 |
| Top World Languages | 0 | - | 4.92 | 813,983 |
| Countries of South America | 0 | - | 5.00 | 915,941 |
| Africa Capitals Quiz | 0 | - | 4.99 | 731,003 |
| Asia Capitals Quiz | 0 | - | 4.98 | 686,636 |
| Countries that Start with K | 0 | - | 4.97 | 809,966 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,405 |
| US States with an Empty Map | 0 | - | 5.00 | 619,464 |
| Countries that Start with V | 0 | - | 4.98 | 605,502 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 502,386 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,365 |
| Flags of Asia Quiz | 0 | - | 4.99 | 606,379 |
| Countries that Start with D | 0 | - | 4.96 | 702,314 |
| Countries That Border Russia | 0 | - | 4.98 | 459,258 |
| One Border Countries | 0 | - | 4.98 | 464,879 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,075 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,668 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,182 |
| Countries with Four Letters | 0 | - | 4.99 | 418,898 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,071 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,068 |
| Countries Bordering France | 0 | - | 4.83 | 399,967 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,923 |
| Northernmost Countries | 0 | - | 4.99 | 358,077 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,537 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,367 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,285 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,450 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,241 |
| Landlocked Countries | 0 | - | 4.99 | 414,287 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,535 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,591 |
| Australia Map Quiz | 0 | - | 4.94 | 342,680 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,072 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,990 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,864 |
| Countries that Start with H | 0 | - | 4.96 | 598,590 |
| Countries that Start with J | 0 | - | 4.98 | 596,642 |
| World Capitals by Proximity | 0 | - | 4.91 | 328,729 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,089 |
| "Land" Countries | 0 | - | 4.98 | 333,824 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,484 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 282,788 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,386 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,666 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 310,758 |
| Flags of Africa Quiz | 0 | - | 5.00 | 464,184 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,083 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,481 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 262,416 |
| Countries with Z | 0 | - | 4.98 | 288,027 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,328 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,260 |
| Flags of North and South America | 0 | - | 4.99 | 368,072 |
| EU Countries Quiz | 0 | - | 4.99 | 270,307 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,535 |
| Countries that Border China | 0 | - | 4.96 | 261,948 |
| French-Speaking Countries | 0 | - | 4.85 | 269,002 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,817 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,311 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,256 |
| Every Country Shape | 0 | - | 5.00 | 459,563 |
| Europe Capital to Country | 0 | - | 4.99 | 248,145 |
| Longest International Borders | 0 | - | 4.99 | 263,922 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,772 |
| Biggest Cities by Language | 0 | - | 4.96 | 234,549 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,811 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 241,852 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 235,953 |
| Megacities on a World Map | 0 | - | 4.98 | 251,243 |
| World Currency Quiz | 0 | - | 4.92 | 298,927 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,505 |
| NATO Countries | 0 | - | 4.98 | 276,287 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 244,987 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,342 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,427 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,612 |
| Official Cities in the UK | 0 | - | 4.89 | 280,878 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,291 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,311 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,450 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,534 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,603 |
| Countries with Megacities | 0 | - | 4.99 | 247,514 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 228,963 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,135 |
| World Capitals by Map | 0 | - | 5.00 | 283,700 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,010 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,789 |
| World's Busiest Airports | 0 | - | 4.94 | 210,738 |
| Country Chain | 0 | - | 4.96 | 215,869 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,554 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,203 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,753 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,065 |
| Independence from Whom | 0 | - | 4.99 | 209,866 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,573 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,741 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,697 |
| Countries with Six Letters | 0 | - | 4.93 | 210,494 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,681 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,551 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,610 |
| Flags of Oceania | 0 | - | 5.00 | 255,691 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,658 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,169 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,041 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,447 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,603 |
| Countries in their Native Language | 0 | - | 4.99 | 196,769 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,446 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 171,502 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,451 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,480 |
| Monarchies of the World | 0 | - | 4.94 | 166,801 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,630 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 190,888 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,538 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,142 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,367 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,133 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,012 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,206 |
| Countries That End in Y | 0 | - | 4.90 | 185,239 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,414 |
| Olympic Host Countries | 0 | - | 4.98 | 199,021 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,954 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,981 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,217 |
| Every European Country Shape | 0 | - | 4.96 | 200,366 |
| Countries of the Middle East | 0 | - | 4.96 | 199,145 |
| Countries by Official Language | 0 | - | 4.95 | 192,917 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,270 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,394 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,792 |
| Counties of Ireland | 0 | - | 4.92 | 193,260 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,544 |
| Countries Bordering India | 0 | - | 4.98 | 162,657 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,702 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,534 |
| 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 | 125,464 |
| European Cities by Clue | 0 | - | 4.70 | 88,844 |
| Geography Analogies #1 | 0 | - | 4.69 | 94,984 |
| Islands by Country #2 | 0 | - | 4.80 | 77,039 |
