| Island Countries | 0 | - | 4.99 | 710,477 |
| Countries by Three Words #1 | 0 | - | 4.95 | 265,481 |
| European Countries by Clue | 0 | - | 4.92 | 183,660 |
| Countries by Military Spending | 0 | - | 4.93 | 177,769 |
| Countries by Three Words #2 | 0 | - | 4.97 | 202,564 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,471,778 |
| US States Quiz | 0 | - | 5.00 | 16,879,696 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,624,429 |
| United States Map Quiz | 0 | - | 4.98 | 4,158,861 |
| World Capitals Quiz | 0 | - | 5.00 | 5,074,926 |
| Europe Map Quiz | 0 | - | 5.00 | 4,763,881 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,528 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,132 |
| Country Flags Quiz #1 | 0 | - | 4.98 | 2,537,535 |
| Random Capital to Country | 0 | - | 4.99 | 2,591,801 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,768,635 |
| Africa Map Quiz | 0 | - | 5.00 | 2,118,298 |
| All Country Flags of the World | 0 | - | 5.00 | 3,666,164 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,102,046 |
| Countries that Start with B | 0 | - | 4.95 | 2,294,757 |
| Countries that Start with A | 0 | - | 4.98 | 2,163,076 |
| Countries of Africa | 0 | - | 5.00 | 2,537,900 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,448,371 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,690,027 |
| South America Map Quiz | 0 | - | 5.00 | 1,550,015 |
| Countries that Start with C | 0 | - | 4.96 | 1,822,408 |
| Middle East Map Quiz | 0 | - | 4.99 | 1,383,158 |
| Countries that Start with S | 0 | - | 4.98 | 1,755,117 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,445,964 |
| Europe Capitals Quiz | 0 | - | 5.00 | 1,586,788 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,419 |
| Countries that Start with G | 0 | - | 4.97 | 1,503,595 |
| Countries that Start with M | 0 | - | 4.97 | 1,381,922 |
| Countries that Start with E | 0 | - | 4.95 | 1,377,450 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,930 |
| Central America and Caribbean Map Quiz | 0 | - | 4.89 | 902,394 |
| Countries that Start with I | 0 | - | 4.92 | 1,288,508 |
| Countries that Start with P | 0 | - | 4.94 | 1,216,322 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,083 |
| Country Flags Quiz #2 | 0 | - | 4.98 | 1,093,095 |
| Countries that Start with N | 0 | - | 4.93 | 1,117,925 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,244,589 |
| Countries that Start with L | 0 | - | 4.98 | 1,090,937 |
| Country Shapes Quiz #1 | 0 | - | 4.93 | 907,229 |
| Random Country to Capital | 0 | - | 4.98 | 920,777 |
| Countries that Start with T | 0 | - | 4.90 | 1,010,011 |
| Biggest Cities in the United States | 0 | - | 4.94 | 978,653 |
| Asia Map Quiz | 0 | - | 4.99 | 917,078 |
| Countries that Start with U | 0 | - | 4.97 | 904,641 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,315 |
| Countries of North America Quiz | 0 | - | 5.00 | 1,023,522 |
| Country Flags Quiz #3 | 0 | - | 4.97 | 733,547 |
| Counties of England | 0 | - | 4.97 | 797,069 |
| Canada Provinces Map Quiz | 0 | - | 4.99 | 640,561 |
| Oceania Map Quiz | 0 | - | 4.98 | 642,533 |
| Top World Languages | 0 | - | 4.92 | 822,432 |
| Countries of South America | 0 | - | 5.00 | 925,299 |
| Africa Capitals Quiz | 0 | - | 4.99 | 737,886 |
| Asia Capitals Quiz | 0 | - | 4.98 | 693,082 |
| Countries that Start with K | 0 | - | 4.97 | 815,975 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,622 |
| US States with an Empty Map | 0 | - | 5.00 | 624,758 |
| Countries that Start with V | 0 | - | 4.98 | 609,450 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,690 |
| Countries with the Longest Coastlines | 0 | - | 4.81 | 413,108 |
| Flags of Asia Quiz | 0 | - | 4.99 | 613,778 |
| Countries that Start with D | 0 | - | 4.96 | 709,845 |
| Countries That Border Russia | 0 | - | 4.98 | 461,816 |
| One Border Countries | 0 | - | 4.98 | 468,712 |
| Country Shapes Quiz #2 | 0 | - | 4.97 | 416,816 |
| South America Capitals Quiz | 0 | - | 5.00 | 481,531 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,344 |
| Countries with Four Letters | 0 | - | 4.99 | 422,550 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,541 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,939 |
| Countries Bordering France | 0 | - | 4.83 | 402,621 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,407 |
| Northernmost Countries | 0 | - | 4.99 | 361,309 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,538 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,091 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,475 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 367,111 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,689 |
| Landlocked Countries | 0 | - | 4.99 | 420,692 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,285 |
| World Map without 12 Countries | 0 | - | 4.97 | 344,495 |
| Australia Map Quiz | 0 | - | 4.95 | 344,661 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,224 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,756 |
| Majority Muslim Countries | 0 | - | 4.98 | 374,461 |
| Countries that Start with H | 0 | - | 4.96 | 604,921 |
| Countries that Start with J | 0 | - | 4.98 | 602,611 |
| World Capitals by Proximity | 0 | - | 4.91 | 331,499 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,497 |
| "Land" Countries | 0 | - | 4.98 | 336,646 |
| Most Populous Countries A-Z | 0 | - | 4.98 | 300,938 |
| Countries with the Biggest Economies by GDP | 0 | - | 4.52 | 290,842 |
| Canada Provinces and Territories | 0 | - | 5.00 | 342,668 |
| Country Shapes Quiz #3 | 0 | - | 4.90 | 295,982 |
| Countries with the Longest Total Borders | 0 | - | 4.99 | 312,739 |
| Flags of Africa Quiz | 0 | - | 5.00 | 471,540 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,609 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,445 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 271,649 |
| Countries with Z | 0 | - | 4.98 | 290,838 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,986 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,840 |
| Flags of North and South America | 0 | - | 4.99 | 373,202 |
| EU Countries Quiz | 0 | - | 4.99 | 274,380 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,541 |
| Countries that Border China | 0 | - | 4.96 | 263,209 |
| French-Speaking Countries | 0 | - | 4.85 | 270,551 |
| Countries with Five Letters | 0 | - | 4.96 | 281,619 |
| United States Cities Map Quiz | 0 | - | 4.96 | 214,242 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 288,453 |
| Every Country Shape | 0 | - | 5.00 | 465,636 |
| Europe Capital to Country | 0 | - | 4.99 | 250,367 |
| Longest International Borders | 0 | - | 4.99 | 264,964 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 273,324 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,438 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,428 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,449 |
| Geographic Groups of Two #1 | 0 | - | 4.99 | 237,004 |
| Megacities on a World Map | 0 | - | 4.98 | 254,635 |
| World Currency Quiz | 0 | - | 4.92 | 303,186 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,819 |
| NATO Countries | 0 | - | 4.98 | 280,522 |
| Five Closest Countries by Country #1 | 0 | - | 5.00 | 245,934 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,331 |
| Country Shapes Quiz #4 | 0 | - | 4.94 | 225,587 |
| Places in their Native Language #1 | 0 | - | 4.85 | 241,966 |
| Official Cities in the UK | 0 | - | 4.89 | 283,821 |
| Summer Olympics Host Cities | 0 | - | 4.98 | 215,082 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,977 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,027 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,066 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,022 |
| Countries with Megacities | 0 | - | 4.99 | 263,539 |
| Countries of Asia with an Empty Map | 0 | - | 4.98 | 230,411 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,933 |
| World Capitals by Map | 0 | - | 5.00 | 286,526 |
| Countries that Produce the Most Wine | 0 | - | 4.87 | 191,708 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,864 |
| World's Busiest Airports | 0 | - | 4.96 | 233,742 |
| Country Chain | 0 | - | 4.96 | 217,119 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,410 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 270,069 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,024 |
| Northernmost Countries A-Z | 0 | - | 4.99 | 195,720 |
| Independence from Whom | 0 | - | 4.99 | 211,752 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,465 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,691 |
| Countries by Borders #1 | 0 | - | 5.00 | 194,493 |
| Countries with Six Letters | 0 | - | 4.94 | 213,006 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,758 |
| Five Closest Countries by Country #2 | 0 | - | 5.00 | 203,236 |
| Border Crossings Quiz #1 | 0 | - | 4.99 | 208,628 |
| Flags of Oceania | 0 | - | 5.00 | 259,527 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,418 |
| Largest Countries with No Borders | 0 | - | 4.97 | 221,439 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,672 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,369 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,916 |
| Countries in their Native Language | 0 | - | 4.99 | 198,480 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,078 |
| World Map without 12 Countries #2 | 0 | - | 4.98 | 173,242 |
| Least Populous Countries A-Z | 0 | - | 4.99 | 170,300 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,579 |
| Monarchies of the World | 0 | - | 4.94 | 168,746 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,203 |
| Biggest Countries by Area A-Z | 0 | - | 4.96 | 192,390 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 191,648 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,273 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,183 |
| Top 10 Smallest U.S. States by Area | 0 | - | 4.98 | 177,733 |
| Countries Closest to the United Kingdom A-Z | 0 | - | 4.96 | 190,897 |
| North America Capitals Quiz | 0 | - | 4.99 | 219,868 |
| Countries That End in Y | 0 | - | 4.91 | 185,761 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,453 |
| Olympic Host Countries | 0 | - | 4.98 | 200,780 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,820 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,550 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,991 |
| Every European Country Shape | 0 | - | 4.96 | 201,774 |
| Countries of the Middle East | 0 | - | 4.96 | 201,219 |
| Countries by Official Language | 0 | - | 4.95 | 194,970 |
| Countries Closest to Australia | 0 | - | 4.99 | 166,966 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,428 |
| Southernmost Countries A-Z | 0 | - | 4.95 | 153,591 |
| Counties of Ireland | 0 | - | 4.92 | 195,384 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,958 |
| Countries Bordering India | 0 | - | 4.98 | 163,444 |
| Countries With the Most Islands of at Least 10 Km² | 0 | - | 4.88 | 144,608 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,880 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,940 |
| Countries with the Most Forest | 0 | - | 4.87 | 147,567 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,852 |
| European Cities by Clue | 0 | - | 4.70 | 89,059 |
| Geography Analogies #1 | 0 | - | 4.69 | 95,196 |
| Islands by Country #2 | 0 | - | 4.80 | 77,440 |
