| Island Countries | 0 | - | 4.99 | 711,156 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,926 |
| European Countries by Clue | 0 | - | 4.92 | 183,842 |
| Countries by Military Spending | 0 | - | 4.93 | 178,406 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,291 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,607,072 |
| US States Quiz | 0 | - | 5.00 | 16,921,438 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,633,879 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,842 |
| World Capitals Quiz | 0 | - | 5.00 | 5,085,052 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,019 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,835,895 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,430 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,540,313 |
| Random Capital to Country | 0 | - | 4.99 | 2,595,036 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,880 |
| Africa Map Quiz | 0 | - | 5.00 | 2,122,094 |
| All Country Flags of the World | 0 | - | 5.00 | 3,681,747 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,922 |
| Countries that Start with B | 0 | - | 4.95 | 2,298,451 |
| Countries that Start with A | 0 | - | 4.98 | 2,167,095 |
| Countries of Africa | 0 | - | 5.00 | 2,545,660 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,808 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,693,155 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,948 |
| Countries that Start with C | 0 | - | 4.96 | 1,825,299 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,985 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,792 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,678 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,591,259 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,294 |
| Countries that Start with G | 0 | - | 4.97 | 1,506,168 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,993 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,906 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,967 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,001 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,437 |
| Countries that Start with P | 0 | - | 4.94 | 1,218,226 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,247 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,426 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,866 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,977 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,787 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,138 |
| Random Country to Capital | 0 | - | 4.98 | 923,046 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,422 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,402 |
| Asia Map Quiz | 0 | - | 4.99 | 919,901 |
| Countries that Start with U | 0 | - | 4.97 | 905,761 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,531 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,026,090 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,488 |
| Counties of England | 0 | - | 4.97 | 799,072 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,797 |
| Oceania Map Quiz | 0 | - | 4.98 | 653,876 |
| Top World Languages | 0 | - | 4.92 | 824,718 |
| Countries of South America | 0 | - | 5.00 | 927,772 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,951 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,906 |
| Countries that Start with K | 0 | - | 4.97 | 817,539 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,233 |
| US States with an Empty Map | 0 | - | 5.00 | 626,106 |
| Countries that Start with V | 0 | - | 4.98 | 610,220 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,941 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,424 |
| Flags of Asia Quiz | 0 | - | 4.99 | 616,050 |
| Countries that Start with D | 0 | - | 4.96 | 711,967 |
| Countries That Border Russia | 0 | - | 4.98 | 462,883 |
| One Border Countries | 0 | - | 4.98 | 470,024 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,436 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,693 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,533 |
| Countries with Four Letters | 0 | - | 4.99 | 423,427 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,194 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,627 |
| Countries Bordering France | 0 | - | 4.83 | 403,611 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,083 |
| Northernmost Countries | 0 | - | 4.99 | 362,090 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,106 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,600 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,742 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,841 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,221 |
| Landlocked Countries | 0 | - | 4.99 | 422,282 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,127 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,044 |
| Australia Map Quiz | 0 | - | 4.95 | 345,236 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,841 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,868 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,683 |
| Countries that Start with H | 0 | - | 4.96 | 606,395 |
| Countries that Start with J | 0 | - | 4.98 | 603,989 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,214 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,991 |
| "Land" Countries | 0 | - | 4.98 | 337,425 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,348 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,460 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,777 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,483 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,131 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,381 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,382 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,714 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,711 |
| Countries with Z | 0 | - | 4.98 | 291,525 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,468 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,259 |
| Flags of North and South America | 0 | - | 4.99 | 374,439 |
| EU Countries Quiz | 0 | - | 4.99 | 275,683 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,074 |
| Countries that Border China | 0 | - | 4.96 | 263,585 |
| French-Speaking Countries | 0 | - | 4.85 | 270,928 |
| Countries with Five Letters | 0 | - | 4.96 | 282,591 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,496 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,440 |
| Every Country Shape | 0 | - | 5.00 | 467,691 |
| Europe Capital to Country | 0 | - | 4.99 | 250,925 |
| Longest International Borders | 0 | - | 4.99 | 265,242 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,613 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,023 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,809 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,885 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,314 |
| Megacities on a World Map | 0 | - | 4.98 | 255,422 |
| World Currency Quiz | 0 | - | 4.92 | 304,335 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,146 |
| NATO Countries | 0 | - | 4.98 | 281,657 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,150 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,854 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,054 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,424 |
| Official Cities in the UK | 0 | - | 4.89 | 284,584 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,540 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,151 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,392 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,426 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,262 |
| Countries with Megacities | 0 | - | 4.99 | 264,741 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,809 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,389 |
| World Capitals by Map | 0 | - | 5.00 | 287,548 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,926 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,489 |
| World's Busiest Airports | 0 | - | 4.96 | 235,091 |
| Country Chain | 0 | - | 4.96 | 217,567 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,916 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,932 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,396 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,076 |
| Independence from Whom | 0 | - | 4.99 | 212,170 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,794 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,250 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,671 |
| Countries with Six Letters | 0 | - | 4.94 | 213,615 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,931 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,414 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,068 |
| Flags of Oceania | 0 | - | 5.00 | 260,636 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,872 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,748 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,866 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,616 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,888 |
| Countries in their Native Language | 0 | - | 4.99 | 199,102 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,374 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,838 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,557 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,958 |
| Monarchies of the World | 0 | - | 4.94 | 169,290 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,745 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,810 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,990 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,577 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,683 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,959 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,138 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,630 |
| Countries That End in Y | 0 | - | 4.91 | 185,889 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,836 |
| Olympic Host Countries | 0 | - | 4.98 | 201,150 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,286 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,685 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,224 |
| Every European Country Shape | 0 | - | 4.96 | 202,257 |
| Countries of the Middle East | 0 | - | 4.96 | 201,738 |
| Countries by Official Language | 0 | - | 4.95 | 195,313 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,159 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,686 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,797 |
| Counties of Ireland | 0 | - | 4.92 | 196,097 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,196 |
| Countries Bordering India | 0 | - | 4.98 | 163,577 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,773 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,985 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,172 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,699 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,252 |
| European Cities by Clue | 0 | - | 4.70 | 89,098 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,480 |
| Islands by Country #2 | 0 | - | 4.80 | 77,566 |
