| Island Countries | 0 | - | 4.99 | 708,300 |
| Countries by Three Words #1 | 0 | - | 4.95 | 263,801 |
| European Countries by Clue | 0 | - | 4.92 | 182,755 |
| Countries by Military Spending | 0 | - | 4.93 | 176,711 |
| Countries by Three Words #2 | 0 | - | 4.97 | 200,136 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,051,452 |
| US States Quiz | 0 | - | 5.00 | 16,744,561 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,596,558 |
| United States Map Quiz | 0 | - | 4.98 | 4,145,525 |
| World Capitals Quiz | 0 | - | 5.00 | 5,042,343 |
| Europe Map Quiz | 0 | - | 5.00 | 4,739,481 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,807,834 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,859 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,529,098 |
| Random Capital to Country | 0 | - | 4.99 | 2,581,464 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,730,302 |
| Africa Map Quiz | 0 | - | 5.00 | 2,107,696 |
| All Country Flags of the World | 0 | - | 5.00 | 3,617,207 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,091,672 |
| Countries that Start with B | 0 | - | 4.95 | 2,283,345 |
| Countries that Start with A | 0 | - | 4.98 | 2,150,741 |
| Countries of Africa | 0 | - | 5.00 | 2,515,070 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,442,684 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,680,507 |
| South America Map Quiz | 0 | - | 5.00 | 1,542,925 |
| Countries that Start with C | 0 | - | 4.96 | 1,813,101 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,377,867 |
| Countries that Start with S | 0 | - | 4.98 | 1,747,029 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,814 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,574,719 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,081 |
| Countries that Start with G | 0 | - | 4.97 | 1,495,265 |
| Countries that Start with M | 0 | - | 4.97 | 1,375,350 |
| Countries that Start with E | 0 | - | 4.95 | 1,369,805 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,321,848 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,353 |
| Countries that Start with I | 0 | - | 4.92 | 1,282,157 |
| Countries that Start with P | 0 | - | 4.94 | 1,210,284 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,610 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,088,713 |
| Countries that Start with N | 0 | - | 4.93 | 1,111,622 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,231,103 |
| Countries that Start with L | 0 | - | 4.98 | 1,084,697 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 904,990 |
| Random Country to Capital | 0 | - | 4.98 | 913,483 |
| Countries that Start with T | 0 | - | 4.90 | 1,005,542 |
| Biggest Cities in the United States | 0 | - | 4.93 | 969,582 |
| Asia Map Quiz | 0 | - | 4.99 | 908,989 |
| Countries that Start with U | 0 | - | 4.97 | 900,995 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,044 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,014,967 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 730,597 |
| Counties of England | 0 | - | 4.97 | 791,099 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,007 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,023 |
| Top World Languages | 0 | - | 4.92 | 815,379 |
| Countries of South America | 0 | - | 5.00 | 917,695 |
| Africa Capitals Quiz | 0 | - | 4.99 | 732,197 |
| Asia Capitals Quiz | 0 | - | 4.98 | 687,739 |
| Countries that Start with K | 0 | - | 4.97 | 810,840 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,800 |
| US States with an Empty Map | 0 | - | 5.00 | 620,253 |
| Countries that Start with V | 0 | - | 4.98 | 606,075 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,089 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,611 |
| Flags of Asia Quiz | 0 | - | 4.99 | 607,431 |
| Countries that Start with D | 0 | - | 4.96 | 703,480 |
| Countries That Border Russia | 0 | - | 4.98 | 459,811 |
| One Border Countries | 0 | - | 4.98 | 465,629 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,361 |
| South America Capitals Quiz | 0 | - | 5.00 | 478,350 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,735 |
| Countries with Four Letters | 0 | - | 4.99 | 419,488 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,557 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,432 |
| Countries Bordering France | 0 | - | 4.83 | 400,573 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,337 |
| Northernmost Countries | 0 | - | 4.99 | 358,659 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,826 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,770 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,591 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,744 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,409 |
| Landlocked Countries | 0 | - | 4.99 | 415,296 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,927 |
| World Map without 12 Countries | 0 | - | 4.97 | 342,922 |
| Australia Map Quiz | 0 | - | 4.94 | 342,913 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,389 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,706 |
| Majority Muslim Countries | 0 | - | 4.98 | 370,828 |
| Countries that Start with H | 0 | - | 4.96 | 599,547 |
| Countries that Start with J | 0 | - | 4.98 | 597,589 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,142 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,454 |
| "Land" Countries | 0 | - | 4.98 | 334,082 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,712 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 286,627 |
| Canada Provinces and Territories | 0 | - | 5.00 | 338,985 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 294,894 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,069 |
| Flags of Africa Quiz | 0 | - | 5.00 | 465,223 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,781 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,645 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 266,333 |
| Countries with Z | 0 | - | 4.98 | 288,236 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,689 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,547 |
| Flags of North and South America | 0 | - | 4.99 | 368,935 |
| EU Countries Quiz | 0 | - | 4.99 | 270,901 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,919 |
| Countries that Border China | 0 | - | 4.96 | 262,144 |
| French-Speaking Countries | 0 | - | 4.85 | 269,274 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,025 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,447 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,728 |
| Every Country Shape | 0 | - | 5.00 | 460,510 |
| Europe Capital to Country | 0 | - | 4.99 | 248,452 |
| Longest International Borders | 0 | - | 4.99 | 264,101 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,438 |
| Biggest Cities by Language | 0 | - | 4.96 | 244,242 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,754 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,104 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,101 |
| Megacities on a World Map | 0 | - | 4.98 | 251,752 |
| World Currency Quiz | 0 | - | 4.92 | 299,568 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,771 |
| NATO Countries | 0 | - | 4.98 | 277,215 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,119 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,654 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,647 |
| Places in their Native Language #1 | 0 | - | 4.84 | 239,829 |
| Official Cities in the UK | 0 | - | 4.89 | 281,358 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,555 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,429 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,964 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,739 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,761 |
| Countries with Megacities | 0 | - | 4.99 | 248,135 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,221 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,400 |
| World Capitals by Map | 0 | - | 5.00 | 284,214 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,115 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,023 |
| World's Busiest Airports | 0 | - | 4.95 | 215,635 |
| Country Chain | 0 | - | 4.96 | 216,084 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,841 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 267,667 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 215,944 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,280 |
| Independence from Whom | 0 | - | 4.99 | 210,132 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,968 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,858 |
| Countries by Borders #1 | 0 | - | 5.00 | 193,895 |
| Countries with Six Letters | 0 | - | 4.93 | 210,685 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,778 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,633 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 206,878 |
| Flags of Oceania | 0 | - | 5.00 | 256,192 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,941 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,435 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,144 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,553 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,126 |
| Countries in their Native Language | 0 | - | 4.99 | 196,994 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,668 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,079 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,576 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,617 |
| Monarchies of the World | 0 | - | 4.94 | 167,065 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,753 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,116 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,710 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,254 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,715 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,211 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,176 |
| North America Capitals Quiz | 0 | - | 4.99 | 217,703 |
| Countries That End in Y | 0 | - | 4.90 | 185,285 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,658 |
| Olympic Host Countries | 0 | - | 4.98 | 199,202 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,307 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,050 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,351 |
| Every European Country Shape | 0 | - | 4.96 | 200,551 |
| Countries of the Middle East | 0 | - | 4.96 | 199,444 |
| Countries by Official Language | 0 | - | 4.95 | 193,165 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,407 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,624 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,910 |
| Counties of Ireland | 0 | - | 4.92 | 193,631 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,689 |
| Countries Bordering India | 0 | - | 4.98 | 163,092 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,819 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,580 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,875 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,776 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,540 |
| European Cities by Clue | 0 | - | 4.70 | 88,881 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,006 |
| Islands by Country #2 | 0 | - | 4.80 | 77,106 |
