| Island Countries | 0 | - | 4.99 | 708,743 |
| Countries by Three Words #1 | 0 | - | 4.95 | 264,557 |
| European Countries by Clue | 0 | - | 4.92 | 183,240 |
| Countries by Military Spending | 0 | - | 4.93 | 176,945 |
| Countries by Three Words #2 | 0 | - | 4.97 | 200,937 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,146,496 |
| US States Quiz | 0 | - | 5.00 | 16,774,596 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,603,095 |
| United States Map Quiz | 0 | - | 4.98 | 4,147,925 |
| World Capitals Quiz | 0 | - | 5.00 | 5,049,067 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,867 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,812,574 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,902 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,530,931 |
| Random Capital to Country | 0 | - | 4.99 | 2,583,846 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,739,111 |
| Africa Map Quiz | 0 | - | 5.00 | 2,110,255 |
| All Country Flags of the World | 0 | - | 5.00 | 3,627,959 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,000 |
| Countries that Start with B | 0 | - | 4.95 | 2,285,695 |
| Countries that Start with A | 0 | - | 4.98 | 2,153,394 |
| Countries of Africa | 0 | - | 5.00 | 2,520,414 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,789 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,682,654 |
| South America Map Quiz | 0 | - | 5.00 | 1,544,287 |
| Countries that Start with C | 0 | - | 4.96 | 1,815,003 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,378,984 |
| Countries that Start with S | 0 | - | 4.98 | 1,748,633 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,620 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,577,355 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,899 |
| Countries that Start with G | 0 | - | 4.97 | 1,496,908 |
| Countries that Start with M | 0 | - | 4.97 | 1,376,693 |
| Countries that Start with E | 0 | - | 4.95 | 1,371,372 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,229 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 900,702 |
| Countries that Start with I | 0 | - | 4.92 | 1,283,417 |
| Countries that Start with P | 0 | - | 4.94 | 1,211,728 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,084 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,089,622 |
| Countries that Start with N | 0 | - | 4.93 | 1,112,871 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,234,117 |
| Countries that Start with L | 0 | - | 4.98 | 1,085,917 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 905,458 |
| Random Country to Capital | 0 | - | 4.98 | 914,768 |
| Countries that Start with T | 0 | - | 4.90 | 1,006,480 |
| Biggest Cities in the United States | 0 | - | 4.93 | 971,597 |
| Asia Map Quiz | 0 | - | 4.99 | 910,675 |
| Countries that Start with U | 0 | - | 4.97 | 901,766 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,270 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,016,890 |
| Country Flags Quiz #3 | 0 | - | 4.98 | 731,241 |
| Counties of England | 0 | - | 4.97 | 792,304 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 637,738 |
| Oceania Map Quiz | 0 | - | 4.98 | 638,354 |
| Top World Languages | 0 | - | 4.92 | 817,027 |
| Countries of South America | 0 | - | 5.00 | 919,365 |
| Africa Capitals Quiz | 0 | - | 4.99 | 733,412 |
| Asia Capitals Quiz | 0 | - | 4.98 | 688,823 |
| Countries that Start with K | 0 | - | 4.97 | 811,830 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,171 |
| US States with an Empty Map | 0 | - | 5.00 | 621,239 |
| Countries that Start with V | 0 | - | 4.98 | 606,978 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 503,959 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 411,845 |
| Flags of Asia Quiz | 0 | - | 4.99 | 608,876 |
| Countries that Start with D | 0 | - | 4.96 | 704,769 |
| Countries That Border Russia | 0 | - | 4.98 | 460,246 |
| One Border Countries | 0 | - | 4.98 | 466,305 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 415,675 |
| South America Capitals Quiz | 0 | - | 5.00 | 479,056 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,604 |
| Countries with Four Letters | 0 | - | 4.99 | 420,194 |
| Countries with the Most Borders | 0 | - | 4.97 | 386,984 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 447,929 |
| Countries Bordering France | 0 | - | 4.83 | 401,032 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,763 |
| Northernmost Countries | 0 | - | 4.99 | 359,260 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,156 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,739 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,953 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 366,091 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,613 |
| Landlocked Countries | 0 | - | 4.99 | 416,449 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,465 |
| World Map without 12 Countries | 0 | - | 4.97 | 343,280 |
| Australia Map Quiz | 0 | - | 4.94 | 343,215 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,780 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,280 |
| Majority Muslim Countries | 0 | - | 4.98 | 371,677 |
| Countries that Start with H | 0 | - | 4.96 | 600,643 |
| Countries that Start with J | 0 | - | 4.98 | 598,665 |
| World Capitals by Proximity | 0 | - | 4.91 | 329,645 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,878 |
| "Land" Countries | 0 | - | 4.98 | 334,514 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 299,866 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 288,191 |
| Canada Provinces and Territories | 0 | - | 5.00 | 339,732 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,131 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 311,354 |
| Flags of Africa Quiz | 0 | - | 5.00 | 466,664 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,221 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,825 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 268,238 |
| Countries with Z | 0 | - | 4.98 | 288,642 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,456 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,860 |
| Flags of North and South America | 0 | - | 4.99 | 369,975 |
| EU Countries Quiz | 0 | - | 4.99 | 271,488 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,260 |
| Countries that Border China | 0 | - | 4.96 | 262,452 |
| French-Speaking Countries | 0 | - | 4.85 | 269,701 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,452 |
| United States Cities Map Quiz | 0 | - | 4.96 | 213,615 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 286,259 |
| Every Country Shape | 0 | - | 5.00 | 461,568 |
| Europe Capital to Country | 0 | - | 4.99 | 248,825 |
| Longest International Borders | 0 | - | 4.99 | 264,270 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 270,242 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,328 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,644 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 242,569 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,256 |
| Megacities on a World Map | 0 | - | 4.98 | 252,257 |
| World Currency Quiz | 0 | - | 4.92 | 300,381 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,020 |
| NATO Countries | 0 | - | 4.98 | 277,947 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,247 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 211,021 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 224,842 |
| Places in their Native Language #1 | 0 | - | 4.84 | 240,123 |
| Official Cities in the UK | 0 | - | 4.89 | 282,014 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 213,848 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,540 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,187 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,209 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,940 |
| Countries with Megacities | 0 | - | 4.99 | 248,822 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 229,555 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,685 |
| World Capitals by Map | 0 | - | 5.00 | 284,695 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,259 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,213 |
| World's Busiest Airports | 0 | - | 4.95 | 227,355 |
| Country Chain | 0 | - | 4.96 | 216,380 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,224 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 268,153 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,175 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 194,428 |
| Independence from Whom | 0 | - | 4.99 | 210,718 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,272 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,012 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,027 |
| Countries with Six Letters | 0 | - | 4.93 | 211,030 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,885 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 202,740 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 207,178 |
| Flags of Oceania | 0 | - | 5.00 | 256,872 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,184 |
| Largest Countries with No Borders | 0 | - | 4.97 | 220,667 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,255 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,705 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,776 |
| Countries in their Native Language | 0 | - | 4.99 | 197,578 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,860 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 172,320 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 169,677 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,791 |
| Monarchies of the World | 0 | - | 4.94 | 167,354 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,970 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 191,303 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,986 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,394 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,028 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,365 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,318 |
| North America Capitals Quiz | 0 | - | 4.99 | 218,124 |
| Countries That End in Y | 0 | - | 4.90 | 185,387 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,026 |
| Olympic Host Countries | 0 | - | 4.98 | 199,451 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,647 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,164 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,477 |
| Every European Country Shape | 0 | - | 4.96 | 200,786 |
| Countries of the Middle East | 0 | - | 4.96 | 199,802 |
| Countries by Official Language | 0 | - | 4.95 | 193,952 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,535 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,784 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 152,992 |
| Counties of Ireland | 0 | - | 4.92 | 193,961 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,851 |
| Countries Bordering India | 0 | - | 4.98 | 163,186 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 143,913 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,633 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,419 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,854 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,618 |
| European Cities by Clue | 0 | - | 4.70 | 88,946 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,061 |
| Islands by Country #2 | 0 | - | 4.80 | 77,174 |
