| Island Countries | 0 | - | 4.99 | 711,036 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,859 |
| European Countries by Clue | 0 | - | 4.92 | 183,811 |
| Countries by Military Spending | 0 | - | 4.93 | 178,341 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,155 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,579,824 |
| US States Quiz | 0 | - | 5.00 | 16,913,337 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,015 |
| United States Map Quiz | 0 | - | 4.98 | 4,163,192 |
| World Capitals Quiz | 0 | - | 5.00 | 5,083,027 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,996 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,604 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,598 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,539,763 |
| Random Capital to Country | 0 | - | 4.99 | 2,594,384 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,356 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,379 |
| All Country Flags of the World | 0 | - | 5.00 | 3,678,604 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,105,086 |
| Countries that Start with B | 0 | - | 4.95 | 2,297,716 |
| Countries that Start with A | 0 | - | 4.98 | 2,166,281 |
| Countries of Africa | 0 | - | 5.00 | 2,544,058 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,449,593 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,692,544 |
| South America Map Quiz | 0 | - | 5.00 | 1,551,544 |
| Countries that Start with C | 0 | - | 4.96 | 1,824,742 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,384,723 |
| Countries that Start with S | 0 | - | 4.98 | 1,757,287 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,115 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,590,371 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,160 |
| Countries that Start with G | 0 | - | 4.97 | 1,505,692 |
| Countries that Start with M | 0 | - | 4.97 | 1,383,609 |
| Countries that Start with E | 0 | - | 4.95 | 1,379,437 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,497 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,881 |
| Countries that Start with I | 0 | - | 4.92 | 1,290,067 |
| Countries that Start with P | 0 | - | 4.94 | 1,217,883 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,819 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,094,151 |
| Countries that Start with N | 0 | - | 4.93 | 1,119,473 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,067 |
| Countries that Start with L | 0 | - | 4.98 | 1,092,433 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,988 |
| Random Country to Capital | 0 | - | 4.98 | 922,624 |
| Countries that Start with T | 0 | - | 4.90 | 1,011,153 |
| Biggest Cities in the United States | 0 | - | 4.94 | 980,869 |
| Asia Map Quiz | 0 | - | 4.99 | 919,244 |
| Countries that Start with U | 0 | - | 4.97 | 905,573 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,777 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,025,521 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 734,309 |
| Counties of England | 0 | - | 4.97 | 798,638 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 641,546 |
| Oceania Map Quiz | 0 | - | 4.98 | 645,264 |
| Top World Languages | 0 | - | 4.92 | 824,176 |
| Countries of South America | 0 | - | 5.00 | 927,286 |
| Africa Capitals Quiz | 0 | - | 4.99 | 739,555 |
| Asia Capitals Quiz | 0 | - | 4.98 | 694,559 |
| Countries that Start with K | 0 | - | 4.97 | 817,243 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,081 |
| US States with an Empty Map | 0 | - | 5.00 | 625,879 |
| Countries that Start with V | 0 | - | 4.98 | 610,089 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 507,760 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,355 |
| Flags of Asia Quiz | 0 | - | 4.99 | 615,643 |
| Countries that Start with D | 0 | - | 4.96 | 711,565 |
| Countries That Border Russia | 0 | - | 4.98 | 462,752 |
| One Border Countries | 0 | - | 4.98 | 469,854 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,336 |
| South America Capitals Quiz | 0 | - | 5.00 | 482,419 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,206 |
| Countries with Four Letters | 0 | - | 4.99 | 423,273 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,066 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,503 |
| Countries Bordering France | 0 | - | 4.83 | 403,474 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,961 |
| Northernmost Countries | 0 | - | 4.99 | 361,946 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,982 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,489 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,590 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,772 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,109 |
| Landlocked Countries | 0 | - | 4.99 | 421,933 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,945 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,938 |
| Australia Map Quiz | 0 | - | 4.95 | 345,035 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,722 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 418,677 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,459 |
| Countries that Start with H | 0 | - | 4.96 | 606,106 |
| Countries that Start with J | 0 | - | 4.98 | 603,716 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,074 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,903 |
| "Land" Countries | 0 | - | 4.98 | 337,326 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,277 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,381 |
| Canada Provinces and Territories | 0 | - | 5.00 | 343,558 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,402 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,066 |
| Flags of Africa Quiz | 0 | - | 5.00 | 472,965 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,149 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,661 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,485 |
| Countries with Z | 0 | - | 4.98 | 291,423 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,365 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,174 |
| Flags of North and South America | 0 | - | 4.99 | 374,177 |
| EU Countries Quiz | 0 | - | 4.99 | 275,442 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,959 |
| Countries that Border China | 0 | - | 4.96 | 263,522 |
| French-Speaking Countries | 0 | - | 4.85 | 270,835 |
| Countries with Five Letters | 0 | - | 4.96 | 282,430 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,446 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,266 |
| Every Country Shape | 0 | - | 5.00 | 467,313 |
| Europe Capital to Country | 0 | - | 4.99 | 250,819 |
| Longest International Borders | 0 | - | 4.99 | 265,195 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,385 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,943 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,547 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,796 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,253 |
| Megacities on a World Map | 0 | - | 4.98 | 255,285 |
| World Currency Quiz | 0 | - | 4.92 | 304,110 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,088 |
| NATO Countries | 0 | - | 4.98 | 281,494 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,102 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,747 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,965 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,265 |
| Official Cities in the UK | 0 | - | 4.89 | 284,444 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,469 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,120 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,324 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,332 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,215 |
| Countries with Megacities | 0 | - | 4.99 | 264,528 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,724 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,307 |
| World Capitals by Map | 0 | - | 5.00 | 287,372 |
| Countries that Produce the Most Wine | 0 | - | 4.86 | 191,871 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,417 |
| World's Busiest Airports | 0 | - | 4.96 | 234,788 |
| Country Chain | 0 | - | 4.96 | 217,378 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,805 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,766 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,294 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,020 |
| Independence from Whom | 0 | - | 4.99 | 212,084 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,728 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,167 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,634 |
| Countries with Six Letters | 0 | - | 4.94 | 213,534 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,905 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,384 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,990 |
| Flags of Oceania | 0 | - | 5.00 | 260,385 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,776 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,674 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,822 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,563 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,697 |
| Countries in their Native Language | 0 | - | 4.99 | 199,034 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,312 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,760 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,515 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,901 |
| Monarchies of the World | 0 | - | 4.94 | 169,197 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,685 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,740 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,955 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,515 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,577 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,938 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,085 |
| North America Capitals Quiz | 0 | - | 4.99 | 220,518 |
| Countries That End in Y | 0 | - | 4.91 | 185,865 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,769 |
| Olympic Host Countries | 0 | - | 4.98 | 201,084 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,178 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,630 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,179 |
| Every European Country Shape | 0 | - | 4.96 | 202,154 |
| Countries of the Middle East | 0 | - | 4.96 | 201,623 |
| Countries by Official Language | 0 | - | 4.95 | 195,238 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,109 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,636 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,752 |
| Counties of Ireland | 0 | - | 4.92 | 195,975 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,151 |
| Countries Bordering India | 0 | - | 4.98 | 163,545 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,743 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,961 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,133 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,678 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,233 |
| European Cities by Clue | 0 | - | 4.70 | 89,090 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,237 |
| Islands by Country #2 | 0 | - | 4.80 | 77,538 |
