| Island Countries | 0 | - | 4.99 | 710,363 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,434 |
| European Countries by Clue | 0 | - | 4.92 | 183,640 |
| Countries by Military Spending | 0 | - | 4.93 | 177,741 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,461 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,455,178 |
| US States Quiz | 0 | - | 5.00 | 16,875,057 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,623,001 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,467 |
| World Capitals Quiz | 0 | - | 5.00 | 5,073,473 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,031 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,828,847 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,533 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,231 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,195 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,767,288 |
| Africa Map Quiz | 0 | - | 5.00 | 2,117,902 |
| All Country Flags of the World | 0 | - | 5.00 | 3,664,164 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,593 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,301 |
| Countries that Start with A | 0 | - | 4.98 | 2,162,598 |
| Countries of Africa | 0 | - | 5.00 | 2,537,053 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,236 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,689,710 |
| South America Map Quiz | 0 | - | 5.00 | 1,549,762 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,033 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,382,981 |
| Countries that Start with S | 0 | - | 4.98 | 1,754,774 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,638 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,299 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,762 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,285 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,658 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,151 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,703 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,299 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,304 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,102 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,806 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,092,952 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,697 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,171 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,727 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,122 |
| Random Country to Capital | 0 | - | 4.98 | 920,491 |
| Countries that Start with T | 0 | - | 4.90 | 1,009,825 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,355 |
| Asia Map Quiz | 0 | - | 4.99 | 916,780 |
| Countries that Start with U | 0 | - | 4.97 | 904,492 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,939 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,248 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,443 |
| Counties of England | 0 | - | 4.97 | 796,763 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,423 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,355 |
| Top World Languages | 0 | - | 4.92 | 822,152 |
| Countries of South America | 0 | - | 5.00 | 924,996 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,668 |
| Asia Capitals Quiz | 0 | - | 4.98 | 692,854 |
| Countries that Start with K | 0 | - | 4.97 | 815,781 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,546 |
| US States with an Empty Map | 0 | - | 5.00 | 624,597 |
| Countries that Start with V | 0 | - | 4.98 | 609,354 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,582 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,068 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,561 |
| Countries that Start with D | 0 | - | 4.96 | 709,582 |
| Countries That Border Russia | 0 | - | 4.98 | 461,739 |
| One Border Countries | 0 | - | 4.98 | 468,582 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,737 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,408 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,199 |
| Countries with Four Letters | 0 | - | 4.99 | 422,426 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,461 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,832 |
| Countries Bordering France | 0 | - | 4.83 | 402,548 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,326 |
| Northernmost Countries | 0 | - | 4.99 | 361,204 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,467 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,029 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,413 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,044 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,644 |
| Landlocked Countries | 0 | - | 4.99 | 420,469 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,203 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,432 |
| Australia Map Quiz | 0 | - | 4.95 | 344,616 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,154 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,619 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,305 |
| Countries that Start with H | 0 | - | 4.96 | 604,742 |
| Countries that Start with J | 0 | - | 4.98 | 602,431 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,412 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,424 |
| "Land" Countries | 0 | - | 4.98 | 336,312 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,897 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.53 | 290,737 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,551 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,926 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,691 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,321 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,511 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,407 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,497 |
| Countries with Z | 0 | - | 4.98 | 290,644 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,939 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,796 |
| Flags of North and South America | 0 | - | 4.99 | 373,099 |
| EU Countries Quiz | 0 | - | 4.99 | 274,207 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,459 |
| Countries that Border China | 0 | - | 4.96 | 263,155 |
| French-Speaking Countries | 0 | - | 4.85 | 270,502 |
| Countries with Five Letters | 0 | - | 4.96 | 281,367 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,215 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,350 |
| Every Country Shape | 0 | - | 5.00 | 465,393 |
| Europe Capital to Country | 0 | - | 4.99 | 250,182 |
| Longest International Borders | 0 | - | 4.99 | 264,929 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,167 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,396 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,245 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,413 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 236,966 |
| Megacities on a World Map | 0 | - | 4.98 | 254,516 |
| World Currency Quiz | 0 | - | 4.92 | 303,036 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,775 |
| NATO Countries | 0 | - | 4.98 | 280,390 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,902 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,259 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,520 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,923 |
| Official Cities in the UK | 0 | - | 4.89 | 283,722 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,031 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,963 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,989 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,025 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,988 |
| Countries with Megacities | 0 | - | 4.99 | 263,365 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,373 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,885 |
| World Capitals by Map | 0 | - | 5.00 | 286,436 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,691 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,847 |
| World's Busiest Airports | 0 | - | 4.96 | 233,590 |
| Country Chain | 0 | - | 4.96 | 217,093 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,374 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 269,995 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 216,984 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,670 |
| Independence from Whom | 0 | - | 4.99 | 211,705 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,429 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,647 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,473 |
| Countries with Six Letters | 0 | - | 4.94 | 212,838 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,740 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,213 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,573 |
| Flags of Oceania | 0 | - | 5.00 | 259,428 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,350 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,402 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,649 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,346 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,810 |
| Countries in their Native Language | 0 | - | 4.99 | 198,450 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,048 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,199 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,268 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,542 |
| Monarchies of the World | 0 | - | 4.94 | 168,675 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,990 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,346 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,608 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,233 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,110 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,702 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,871 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,788 |
| Countries That End in Y | 0 | - | 4.91 | 185,729 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,413 |
| Olympic Host Countries | 0 | - | 4.98 | 200,730 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,765 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,523 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,961 |
| Every European Country Shape | 0 | - | 4.96 | 201,672 |
| Countries of the Middle East | 0 | - | 4.96 | 201,175 |
| Countries by Official Language | 0 | - | 4.95 | 194,927 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,949 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,405 |
| Southernmost Countries A-Z | 0 | - | 4.94 | 153,565 |
| Counties of Ireland | 0 | - | 4.92 | 195,277 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,931 |
| Countries Bordering India | 0 | - | 4.98 | 163,429 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,590 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,866 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,905 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,554 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,844 |
| European Cities by Clue | 0 | - | 4.70 | 89,054 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,184 |
| Islands by Country #2 | 0 | - | 4.80 | 77,429 |
