Hasbro Nostalgia Series

Risk

Widely accepted as the first mainstream wargame. Players are given tons of little army units to place onto the map of the world. When it's your turn, you use your units to attack other players' positions, hopefully with superior numbers. Combat is a simple dice rolling affair that stresses attrition, and reinforcements are given to players who collect sets of cards.

Stratego

From the box:

The gameboard is your battlefield. You have an army of men at your disposal and six bombs. Your mission--protect your flag and capture your opponent's flag.

Secretly place your men, bombs, and flag on the gameboard with these objectives in mind. But remember your opponent is doing the same thing, so you must plan a defense as well as an offense.

Once the armies are in place, advance your men. When you're one space away from an enemy, attack. You and your opponent declare ranks. The lower-ranking man is captured and out of play.

You control your pieces and risk your men in battles where the strength of your enemy is unknown. The suspense builds as your men move deeper into enemy territory. Move with caution and courage. The next piece you attack could be a bomb. And when attacked, it could "blast" your man off the board and out of play.

The first to capture an enemy flag is the winner!

This game is similar to, and almost certainly derived directly from, the H.P. Gibsons (UK) game L'Attaque (1909). It is not exactly the same, but not far from it (numbered pieces, spy (same name) can kill the strongest piece but only when attacking, flag, bombs, etc.) These game in turn almost certainly draw on the classic Chinese children's game Dou Shou Qi.

Re-implemented by:

Stratego (Revised Edition) (aka Stratego Fire & Ice)
The Generals
Stratego: Legends
Stratego: Star Wars
Stratego: The Lord of the Rings
Ultimate Stratego
Electronic Stratego
Stratego: Marvel Heroes
Stratego: Star Wars Saga Edition
Stratego: The Chronicles of Narnia

and numerous others.

Similar to:

Admirals
Lu Zhan Jun Qi
L'Attaque
Batalj
Sharpe's Attack

Different Edition Complications
When first produced in Europe, the most powerful pieces had higher numbers. I.e. the Marshall (most powerful piece) was a 10, the General was a 9, and so on. The higher the rank, the higher the number.
When they introduced Stratego in the USA, the numbering was reversed, so the Marshall was a 1, the General 2, and so on. The 1st rank (most powerful) was 1, the second most powerful was 2, 3rd most powerful was 3....
Then, in 2000s Hasbro re-imagined Stratego in the USA and made a few changes. They reduced the number of pieces per side (from 40 to 30), added additional powers, and changed the numbering to reflect the European system.
This caused extreme consternation with many faithful American Stratego fans who preferred the 'old way'. (Actually the second oldest way, but whatever.) Many of these insist on playing Stratego with the 'Marshall 1 system'.
This wouldn't be a problem, except any and all discussions of Stratego are fraught with misunderstandings by those who are unaware of dual numbering systems! Keep this in mind when reading information about Stratego.

Clue

The classic detective game! In Clue, players move from room to room in a mansion to solve the mystery of: who done it, with what, and where? Players are dealt character, weapon, and location cards after the top card from each card type is secretly placed in the confidential file in the middle of the board. Players must move to a room and then make an accusation against a character saying they did it in that room with a specific weapon. The player to the left must show one of any cards accused to the accuser if in that player's hand. Through deductive reasoning each player must figure out which character, weapon, and location are in the secret file. To do this, each player must uncover what cards are in other players hands by making more and more accusations. Once a player knows what cards the other players are holding they will know what cards are in the secret file. A great game for those who enjoy reasoning and thinking things out.

Monopoly

Theme
Players take the part of land owners, attempting to buy and then develop their land. Income is gained by other players visiting their properties and money is spent when they visit properties belonging to other players. When times get tough, players may have to mortgage their properties to raise cash for fines, taxes and other misfortunes.

Gameplay
On his turn, a player rolls two dice and moves that number of spaces around the board. If the player lands on an as-yet-unowned property, he has the opportunity to buy it and add it to his portfolio or allow the bank to auction it to the highest bidder. If a player owns all the spaces within a color group, he may then build houses and hotels on these spaces, generating even more income from opponents who land there. If he lands on a property owned by another player, he must pay that player rent according to the value of the land and any buildings on it. There are other places on the board which can not be bought, but instead require the player to draw a card and perform the action on the card, pay taxes, collect income, or even go to jail.

Goal
The goal of the game is to be the last player remaining with any money.

Cultural impact on rules
Monopoly is unusual in that the game has official, printed rules, but most players learn how to play from others, never actually learning the correct way to play. This has led to the canonization of a number of house rules that make the game more palatable to children (and sore losers) but harm the gameplay by preventing players from going bankrupt or slowing down the rate of property acquisition. One common house rule has players put any money paid to the bank in the center of the board, which jackpot a player may earn by landing on Free Parking. This prevents the game from removing money from play, and since players collect $200 each time they pass Go, this results in ever-increasing bankrolls and players surviving rents that should have bankrupted them. Another house rule allows players to take "loans" from the bank instead of going bankrupt, which means the game will never end. Some house rules arise out of ignorance rather than attempts to improve the game. For instance, many players don't know that properties landed on but left unbought go up for auction, and even some that know to auction don't know that the bidding starts at $1, meaning a player may pay well below the listed price for an auctioned property.

Background
In the USA in 1933, Charles Darrow devised Monopoly based on an earlier game by Elizabeth J. Magie. The patent was filed 31st August 1935 while the game was on sale in America. Based on an earlier game, The Landlord's Game, it was at first rejected by Parker Bros., as being too complicated to be a success. How wrong could they be! It came to the UK in 1936, made under licence by Waddingtons. Darrow died in 1967 having realised he had developed one of the most successful board games of all times. It was awarded as Game of the Century by the TRA (Toy Retailers Association).

Monopoly was patented in 1935 by Charles Darrow and released by Parker Brothers. The game was actually one of a number of variants in existence at the time, all of which date back to an earlier, 1904 game by Elizabeth J. Magie called The Landlord's Game. Magie was a proponent of the Single Tax put forth by famous author Henry George. The game was designed to show the evils of earning money from renting land (as it leads to the destitution of all but one player) and the virtues of the proposed Single Tax - players could choose to play under regular rules or alternate "Single Tax" rules.

The game didn't really go anywhere and Magie lost interest in it. Variations of the game evolved, however, and homemade versions traveled up and down the Atlantic coast and even as far west as Michigan and Texas, being developed all along the way. Eventually the game was noticed by Charles Darrow, who introduced it to the world in its current form.

Re-implements:

The Landlord's Game

Expanded by:
Official

Monopoly Stock Exchange Add-on
Monopoly Free Parking Mini Game
Monopoly Get Out of Jail Mini Game

Unofficial

Super Add-ons: Monopoly
Entrepreneur's Accessory to Monopoly
Game Spice: Monopoly Expansion
Mafiopoly
Monopoly: Mob Rule Expansion Deck
Final Fantasy Monopoly