| Island Countries | 0 | - | 4.99 | 708,832 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,616 |
| European Countries by Clue | 0 | - | 4.92 | 183,267 |
| Countries by Military Spending | 0 | - | 4.93 | 176,976 |
| Countries by Three Words #2 | 0 | - | 4.97 | 201,043 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,167,764 |
| US States Quiz | 0 | - | 5.00 | 16,780,465 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,471 |
| United States Map Quiz | 0 | - | 4.98 | 4,148,581 |
| World Capitals Quiz | 0 | - | 5.00 | 5,050,944 |
| Europe Map Quiz | 0 | - | 5.00 | 4,746,125 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,813,768 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,583 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,531,282 |
| Random Capital to Country | 0 | - | 4.99 | 2,584,307 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,934 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,727 |
| All Country Flags of the World | 0 | - | 5.00 | 3,630,589 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,390 |
| Countries that Start with B | 0 | - | 4.95 | 2,286,281 |
| Countries that Start with A | 0 | - | 4.98 | 2,154,045 |
| Countries of Africa | 0 | - | 5.00 | 2,521,592 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,952 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,683,100 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,582 |
| Countries that Start with C | 0 | - | 4.96 | 1,815,490 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,379,143 |
| Countries that Start with S | 0 | - | 4.98 | 1,749,087 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,021 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,947 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,932 |
| Countries that Start with G | 0 | - | 4.97 | 1,497,283 |
| Countries that Start with M | 0 | - | 4.97 | 1,377,013 |
| Countries that Start with E | 0 | - | 4.95 | 1,371,759 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,517 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,750 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,728 |
| Countries that Start with P | 0 | - | 4.94 | 1,212,007 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,413 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,810 |
| Countries that Start with N | 0 | - | 4.93 | 1,113,171 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,728 |
| Countries that Start with L | 0 | - | 4.98 | 1,086,201 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,558 |
| Random Country to Capital | 0 | - | 4.98 | 915,064 |
| Countries that Start with T | 0 | - | 4.90 | 1,006,731 |
| Biggest Cities in the United States | 0 | - | 4.93 | 971,997 |
| Asia Map Quiz | 0 | - | 4.99 | 911,007 |
| Countries that Start with U | 0 | - | 4.97 | 901,949 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,780 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,017,324 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,470 |
| Counties of England | 0 | - | 4.97 | 792,606 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,872 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,636 |
| Top World Languages | 0 | - | 4.92 | 817,403 |
| Countries of South America | 0 | - | 5.00 | 919,754 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,671 |
| Asia Capitals Quiz | 0 | - | 4.98 | 689,091 |
| Countries that Start with K | 0 | - | 4.97 | 812,079 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,292 |
| US States with an Empty Map | 0 | - | 5.00 | 621,412 |
| Countries that Start with V | 0 | - | 4.98 | 607,152 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 504,087 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,900 |
| Flags of Asia Quiz | 0 | - | 4.99 | 609,164 |
| Countries that Start with D | 0 | - | 4.96 | 705,064 |
| Countries That Border Russia | 0 | - | 4.98 | 460,356 |
| One Border Countries | 0 | - | 4.98 | 466,426 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,754 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,236 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,819 |
| Countries with Four Letters | 0 | - | 4.99 | 420,360 |
| Countries with the Most Borders | 0 | - | 4.97 | 387,070 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,095 |
| Countries Bordering France | 0 | - | 4.83 | 401,142 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,863 |
| Northernmost Countries | 0 | - | 4.99 | 359,402 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,235 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,839 |
| Countries Bordering Germany | 0 | - | 4.99 | 368,015 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,140 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,670 |
| Landlocked Countries | 0 | - | 4.99 | 416,705 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,575 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,351 |
| Australia Map Quiz | 0 | - | 4.94 | 343,285 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,855 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,404 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,901 |
| Countries that Start with H | 0 | - | 4.96 | 600,903 |
| Countries that Start with J | 0 | - | 4.98 | 598,892 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,744 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,967 |
| "Land" Countries | 0 | - | 4.98 | 334,621 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,929 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 288,475 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,878 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,181 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,466 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,948 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,349 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,878 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,560 |
| Countries with Z | 0 | - | 4.98 | 288,778 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,592 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,910 |
| Flags of North and South America | 0 | - | 4.99 | 370,202 |
| EU Countries Quiz | 0 | - | 4.99 | 271,654 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,333 |
| Countries that Border China | 0 | - | 4.96 | 262,503 |
| French-Speaking Countries | 0 | - | 4.85 | 269,754 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,593 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,640 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,403 |
| Every Country Shape | 0 | - | 5.00 | 461,812 |
| Europe Capital to Country | 0 | - | 4.99 | 248,930 |
| Longest International Borders | 0 | - | 4.99 | 264,307 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,421 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,447 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,898 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,634 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,317 |
| Megacities on a World Map | 0 | - | 4.98 | 252,359 |
| World Currency Quiz | 0 | - | 4.92 | 300,569 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,067 |
| NATO Countries | 0 | - | 4.98 | 278,129 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,280 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,090 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,891 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,192 |
| Official Cities in the UK | 0 | - | 4.89 | 282,157 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,947 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,569 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,235 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,284 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,983 |
| Countries with Megacities | 0 | - | 4.99 | 248,978 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,596 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,762 |
| World Capitals by Map | 0 | - | 5.00 | 284,816 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,281 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,251 |
| World's Busiest Airports | 0 | - | 4.96 | 228,920 |
| Country Chain | 0 | - | 4.96 | 216,425 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,291 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,251 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,235 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,484 |
| Independence from Whom | 0 | - | 4.99 | 210,818 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,325 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,047 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,054 |
| Countries with Six Letters | 0 | - | 4.93 | 211,148 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,970 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,760 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,262 |
| Flags of Oceania | 0 | - | 5.00 | 257,017 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,244 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,705 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,275 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,737 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,897 |
| Countries in their Native Language | 0 | - | 4.99 | 197,639 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,908 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,387 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,706 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,836 |
| Monarchies of the World | 0 | - | 4.94 | 167,432 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,039 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,352 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,023 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,423 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,083 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,379 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,350 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,262 |
| Countries That End in Y | 0 | - | 4.90 | 185,426 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,089 |
| Olympic Host Countries | 0 | - | 4.98 | 199,515 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,720 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,184 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,515 |
| Every European Country Shape | 0 | - | 4.96 | 200,835 |
| Countries of the Middle East | 0 | - | 4.96 | 199,869 |
| Countries by Official Language | 0 | - | 4.95 | 194,020 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,551 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,809 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,020 |
| Counties of Ireland | 0 | - | 4.92 | 194,045 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,909 |
| Countries Bordering India | 0 | - | 4.98 | 163,200 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,937 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,646 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,451 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,883 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,633 |
| European Cities by Clue | 0 | - | 4.70 | 88,950 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,068 |
| Islands by Country #2 | 0 | - | 4.80 | 77,195 |
