| Island Countries | 0 | - | 4.99 | 711,638 |
| Countries by Three Words #1 | 0 | - | 4.95 | 266,187 |
| European Countries by Clue | 0 | - | 4.92 | 183,971 |
| Countries by Military Spending | 0 | - | 4.93 | 178,687 |
| Countries by Three Words #2 | 0 | - | 4.97 | 203,831 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,709,850 |
| US States Quiz | 0 | - | 5.00 | 16,950,578 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,641,348 |
| United States Map Quiz | 0 | - | 4.98 | 4,166,591 |
| World Capitals Quiz | 0 | - | 5.00 | 5,093,090 |
| Europe Map Quiz | 0 | - | 5.00 | 4,778,128 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,840,960 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,794 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,542,440 |
| Random Capital to Country | 0 | - | 4.99 | 2,597,323 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,790,125 |
| Africa Map Quiz | 0 | - | 5.00 | 2,125,045 |
| All Country Flags of the World | 0 | - | 5.00 | 3,694,092 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,108,711 |
| Countries that Start with B | 0 | - | 4.95 | 2,301,611 |
| Countries that Start with A | 0 | - | 4.98 | 2,170,483 |
| Countries of Africa | 0 | - | 5.00 | 2,550,949 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,752 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,695,294 |
| South America Map Quiz | 0 | - | 5.00 | 1,553,409 |
| Countries that Start with C | 0 | - | 4.96 | 1,827,745 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,385,879 |
| Countries that Start with S | 0 | - | 4.98 | 1,759,867 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,819 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,594,565 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,421 |
| Countries that Start with G | 0 | - | 4.97 | 1,508,214 |
| Countries that Start with M | 0 | - | 4.97 | 1,385,684 |
| Countries that Start with E | 0 | - | 4.95 | 1,381,939 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,332,943 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 903,710 |
| Countries that Start with I | 0 | - | 4.92 | 1,292,096 |
| Countries that Start with P | 0 | - | 4.94 | 1,219,717 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,021 |
| Country Flags Quiz #2 | 0 | - | 4.99 | 1,095,495 |
| Countries that Start with N | 0 | - | 4.93 | 1,121,399 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,252,376 |
| Countries that Start with L | 0 | - | 4.98 | 1,094,362 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 908,750 |
| Random Country to Capital | 0 | - | 4.98 | 924,921 |
| Countries that Start with T | 0 | - | 4.90 | 1,013,009 |
| Biggest Cities in the United States | 0 | - | 4.94 | 983,663 |
| Asia Map Quiz | 0 | - | 4.99 | 922,215 |
| Countries that Start with U | 0 | - | 4.97 | 906,700 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,707 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,028,129 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 735,244 |
| Counties of England | 0 | - | 4.97 | 800,668 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 642,755 |
| Oceania Map Quiz | 0 | - | 4.98 | 657,268 |
| Top World Languages | 0 | - | 4.92 | 826,789 |
| Countries of South America | 0 | - | 5.00 | 929,604 |
| Africa Capitals Quiz | 0 | - | 4.99 | 741,583 |
| Asia Capitals Quiz | 0 | - | 4.98 | 696,556 |
| Countries that Start with K | 0 | - | 4.97 | 818,786 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,721 |
| US States with an Empty Map | 0 | - | 5.00 | 627,086 |
| Countries that Start with V | 0 | - | 4.98 | 610,908 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 508,795 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 413,696 |
| Flags of Asia Quiz | 0 | - | 4.99 | 617,602 |
| Countries that Start with D | 0 | - | 4.96 | 713,755 |
| Countries That Border Russia | 0 | - | 4.98 | 463,693 |
| One Border Countries | 0 | - | 4.98 | 470,800 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 417,830 |
| South America Capitals Quiz | 0 | - | 5.00 | 483,611 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,373 |
| Countries with Four Letters | 0 | - | 4.99 | 424,544 |
| Countries with the Most Borders | 0 | - | 4.97 | 389,718 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,308 |
| Countries Bordering France | 0 | - | 4.83 | 404,153 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,608 |
| Northernmost Countries | 0 | - | 4.99 | 362,876 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,564 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,020 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,183 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,111 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,555 |
| Landlocked Countries | 0 | - | 4.99 | 423,557 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,952 |
| World Map without 12 Countries | 0 | - | 4.97 | 345,464 |
| Australia Map Quiz | 0 | - | 4.95 | 345,618 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,312 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,599 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,473 |
| Countries that Start with H | 0 | - | 4.96 | 607,650 |
| Countries that Start with J | 0 | - | 4.98 | 605,137 |
| World Capitals by Proximity | 0 | - | 4.91 | 332,847 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 336,345 |
| "Land" Countries | 0 | - | 4.98 | 337,800 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 301,548 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 291,810 |
| Canada Provinces and Territories | 0 | - | 5.00 | 344,787 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 296,749 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 313,487 |
| Flags of Africa Quiz | 0 | - | 5.00 | 475,100 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,950 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 237,951 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 273,593 |
| Countries with Z | 0 | - | 4.98 | 291,873 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,844 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,564 |
| Flags of North and South America | 0 | - | 4.99 | 375,430 |
| EU Countries Quiz | 0 | - | 4.99 | 276,492 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,534 |
| Countries that Border China | 0 | - | 4.96 | 263,847 |
| French-Speaking Countries | 0 | - | 4.85 | 271,239 |
| Countries with Five Letters | 0 | - | 4.96 | 283,095 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,954 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,143 |
| Every Country Shape | 0 | - | 5.00 | 468,991 |
| Europe Capital to Country | 0 | - | 4.99 | 251,430 |
| Longest International Borders | 0 | - | 4.99 | 265,482 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,485 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,314 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,988 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 244,212 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,669 |
| Megacities on a World Map | 0 | - | 4.98 | 255,998 |
| World Currency Quiz | 0 | - | 4.92 | 305,326 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,544 |
| NATO Countries | 0 | - | 4.98 | 282,342 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 246,318 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 213,271 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 226,331 |
| Places in their Native Language #1 | 0 | - | 4.85 | 242,879 |
| Official Cities in the UK | 0 | - | 4.89 | 285,252 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,943 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,343 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,677 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,678 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,488 |
| Countries with Megacities | 0 | - | 4.99 | 265,695 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 231,138 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,846 |
| World Capitals by Map | 0 | - | 5.00 | 288,374 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 192,059 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,687 |
| World's Busiest Airports | 0 | - | 4.96 | 235,982 |
| Country Chain | 0 | - | 4.96 | 217,903 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,328 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 271,550 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,967 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 196,317 |
| Independence from Whom | 0 | - | 4.99 | 212,490 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,050 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,502 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,825 |
| Countries with Six Letters | 0 | - | 4.94 | 213,963 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,046 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,541 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 209,478 |
| Flags of Oceania | 0 | - | 5.00 | 261,480 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,201 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,964 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 181,001 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,819 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,551 |
| Countries in their Native Language | 0 | - | 4.99 | 199,358 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,909 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 174,148 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,682 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,152 |
| Monarchies of the World | 0 | - | 4.94 | 169,647 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,961 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 193,433 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,290 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,752 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,015 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 178,048 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 191,326 |
| North America Capitals Quiz | 0 | - | 4.99 | 221,272 |
| Countries That End in Y | 0 | - | 4.91 | 185,978 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,131 |
| Olympic Host Countries | 0 | - | 4.98 | 201,491 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,852 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,915 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,395 |
| Every European Country Shape | 0 | - | 4.96 | 202,503 |
| Countries of the Middle East | 0 | - | 4.96 | 202,131 |
| Countries by Official Language | 0 | - | 4.95 | 195,577 |
| Countries Closest to Australia | 0 | - | 4.99 | 167,278 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,886 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,903 |
| Counties of Ireland | 0 | - | 4.92 | 196,644 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,415 |
| Countries Bordering India | 0 | - | 4.98 | 163,685 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,864 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,044 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,334 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,803 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,327 |
| European Cities by Clue | 0 | - | 4.70 | 89,125 |
| Geography Analogies #1 | 0 | - | 4.69 | 96,122 |
| Islands by Country #2 | 0 | - | 4.80 | 77,678 |
