| Island Countries | 0 | - | 4.99 | 708,924 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,684 |
| European Countries by Clue | 0 | - | 4.92 | 183,290 |
| Countries by Military Spending | 0 | - | 4.93 | 177,014 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,151 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,187,779 |
| US States Quiz | 0 | - | 5.00 | 16,787,169 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,605,550 |
| United States Map Quiz | 0 | - | 4.98 | 4,149,138 |
| World Capitals Quiz | 0 | - | 5.00 | 5,052,308 |
| Europe Map Quiz | 0 | - | 5.00 | 4,747,389 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,814,811 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,371,250 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,531,673 |
| Random Capital to Country | 0 | - | 4.99 | 2,584,759 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,742,821 |
| Africa Map Quiz | 0 | - | 5.00 | 2,111,223 |
| All Country Flags of the World | 0 | - | 5.00 | 3,632,762 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,847 |
| Countries that Start with B | 0 | - | 4.95 | 2,286,826 |
| Countries that Start with A | 0 | - | 4.98 | 2,154,651 |
| Countries of Africa | 0 | - | 5.00 | 2,522,594 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,444,210 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,683,545 |
| South America Map Quiz | 0 | - | 5.00 | 1,545,119 |
| Countries that Start with C | 0 | - | 4.96 | 1,815,916 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,339 |
| Countries that Start with S | 0 | - | 4.98 | 1,749,476 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,400 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,578,611 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,859,762 |
| Countries that Start with G | 0 | - | 4.97 | 1,497,659 |
| Countries that Start with M | 0 | - | 4.97 | 1,377,306 |
| Countries that Start with E | 0 | - | 4.95 | 1,372,138 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,779 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,921 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,997 |
| Countries that Start with P | 0 | - | 4.94 | 1,212,285 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,704 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,988 |
| Countries that Start with N | 0 | - | 4.93 | 1,113,476 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,235,421 |
| Countries that Start with L | 0 | - | 4.98 | 1,086,462 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,661 |
| Random Country to Capital | 0 | - | 4.98 | 915,383 |
| Countries that Start with T | 0 | - | 4.90 | 1,006,939 |
| Biggest Cities in the United States | 0 | - | 4.93 | 972,499 |
| Asia Map Quiz | 0 | - | 4.99 | 911,387 |
| Countries that Start with U | 0 | - | 4.97 | 902,121 |
| Countries of Oceania | 0 | - | 5.00 | 1,047,608 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,017,770 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,613 |
| Counties of England | 0 | - | 4.97 | 792,889 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 638,037 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,804 |
| Top World Languages | 0 | - | 4.92 | 817,750 |
| Countries of South America | 0 | - | 5.00 | 920,105 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,946 |
| Asia Capitals Quiz | 0 | - | 4.98 | 689,391 |
| Countries that Start with K | 0 | - | 4.97 | 812,297 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,417 |
| US States with an Empty Map | 0 | - | 5.00 | 621,597 |
| Countries that Start with V | 0 | - | 4.98 | 607,293 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,273 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,966 |
| Flags of Asia Quiz | 0 | - | 4.99 | 609,418 |
| Countries that Start with D | 0 | - | 4.96 | 705,387 |
| Countries That Border Russia | 0 | - | 4.98 | 460,447 |
| One Border Countries | 0 | - | 4.98 | 466,586 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,822 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,415 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,983 |
| Countries with Four Letters | 0 | - | 4.99 | 420,476 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,173 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,212 |
| Countries Bordering France | 0 | - | 4.83 | 401,249 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,965 |
| Northernmost Countries | 0 | - | 4.99 | 359,520 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,318 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,938 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,086 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,194 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,701 |
| Landlocked Countries | 0 | - | 4.99 | 416,959 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,670 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,424 |
| Australia Map Quiz | 0 | - | 4.94 | 343,356 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,950 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,524 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,072 |
| Countries that Start with H | 0 | - | 4.96 | 601,157 |
| Countries that Start with J | 0 | - | 4.98 | 599,150 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,864 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 334,051 |
| "Land" Countries | 0 | - | 4.98 | 334,739 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,973 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 288,713 |
| Canada Provinces and Territories | 0 | - | 5.00 | 340,081 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,230 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,770 |
| Flags of Africa Quiz | 0 | - | 5.00 | 467,199 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,424 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,922 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,813 |
| Countries with Z | 0 | - | 4.98 | 288,894 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,865 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,974 |
| Flags of North and South America | 0 | - | 4.99 | 370,506 |
| EU Countries Quiz | 0 | - | 4.99 | 271,826 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,429 |
| Countries that Border China | 0 | - | 4.96 | 262,552 |
| French-Speaking Countries | 0 | - | 4.85 | 269,813 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,700 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,680 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,532 |
| Every Country Shape | 0 | - | 5.00 | 462,038 |
| Europe Capital to Country | 0 | - | 4.99 | 249,011 |
| Longest International Borders | 0 | - | 4.99 | 264,355 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,610 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,540 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,234 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,693 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,380 |
| Megacities on a World Map | 0 | - | 4.98 | 252,447 |
| World Currency Quiz | 0 | - | 4.92 | 300,738 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,108 |
| NATO Countries | 0 | - | 4.98 | 278,272 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,307 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,188 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,930 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,236 |
| Official Cities in the UK | 0 | - | 4.89 | 282,273 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 214,035 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,607 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,278 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,345 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,073 |
| Countries with Megacities | 0 | - | 4.99 | 249,197 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,648 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,855 |
| World Capitals by Map | 0 | - | 5.00 | 284,910 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,312 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,292 |
| World's Busiest Airports | 0 | - | 4.96 | 229,760 |
| Country Chain | 0 | - | 4.96 | 216,474 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,354 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,368 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,286 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,533 |
| Independence from Whom | 0 | - | 4.99 | 210,880 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,375 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,083 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,083 |
| Countries with Six Letters | 0 | - | 4.93 | 211,229 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,329 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,788 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,340 |
| Flags of Oceania | 0 | - | 5.00 | 257,172 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,310 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,752 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,310 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,765 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,043 |
| Countries in their Native Language | 0 | - | 4.99 | 197,692 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,958 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,440 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,720 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,890 |
| Monarchies of the World | 0 | - | 4.94 | 167,496 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,112 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,406 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,069 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,460 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,159 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,399 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,387 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,378 |
| Countries That End in Y | 0 | - | 4.90 | 185,460 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,149 |
| Olympic Host Countries | 0 | - | 4.98 | 199,691 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,775 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,198 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,547 |
| Every European Country Shape | 0 | - | 4.96 | 200,882 |
| Countries of the Middle East | 0 | - | 4.96 | 199,936 |
| Countries by Official Language | 0 | - | 4.95 | 194,079 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,576 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,832 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,047 |
| Counties of Ireland | 0 | - | 4.92 | 194,110 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,953 |
| Countries Bordering India | 0 | - | 4.98 | 163,214 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,961 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,664 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,471 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,908 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,645 |
| European Cities by Clue | 0 | - | 4.70 | 88,958 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,073 |
| Islands by Country #2 | 0 | - | 4.80 | 77,216 |
