Modern
21st Century Skirmish
This game is intended as a fast paced platoon level game involving supporting vehicles on a modern battlefield. Easy to learn and uses 1:72 or 1:48 scale models.
3mm 1967 Arab Israeli Wars
A Six Day War variant of Bernard Garaty Fast Play Modern rules.
5.56mm Fast Play Modern Skirmish Rules
A system detailed enough to cover just about anything that might happen in a modern fire-fight whilst at the same time being fluid and easy to use on the tabletop.
A Fistful Of TOWs2
A Fistful of TOWs 2 focuses on modern (i.e., post WWII) mechanized combat. The game was designed for 1/285, 1/300 or 6mm scales, but you can play it with any scale of miniatures. This was version 2 of FFT below.
A Torrent of Steel
Rules for large scale micro-armour battles in the late 20th Century. Includes six day war, Yom Kippur War and Desert Storm and possible Soviet invasion of Europe.
A.F.C.Q.B.
Action Figure Close Quarters Battle. Fast and simple game to use with action figures 1/18th scale or around 3" tall.
AirWar: C21 lite
AirWar: C21 lite is a stripped down free set of the new 2nd edition of our hugely popular contemporary air combat rules AirWar: C21. 
Airwar Korea
The first in a series of introductory level rules for air to air combat with this set focusing on Korea. Air War-Korea is highly suitable for group play and can be learned quickly, with only a few pages of rules. The rules include all markers and templates needed to play the game. Free Aircraft markers. 
Airwar Vietnam
The second in a series of introductory level rules for air to air combat with this set focusing on Vietnam. Air War-Vietnam is highly suitable for group play and can be learned quickly, with only a few pages of rules. The rules include all markers and templates needed to play the game. Free Aircraft markers. 
Air Wars
Straightforward and easy to play air to air combat in the Vietnam era - 1960's and 70's. Ideally needs a hex board and some models (though counters will do).
Airborne!
US Army 82nd Airborne drops in on a 3rd-World nation. This is a variation on my GATORS! game. Maps and counters included. 2 players.
AK47 Variant
Also known as the Cardwell variant (after the author) changes the original Peter Pig Rules significantly.
Alienstar - World War 3
For the period 1955 to 2010 using 2mm to 1/35th scale. Battalion to Corps level.
Ambush
Guerrilla Wargaming 1960/99. Ambush is a set of miniature wargame rules that attempts to simulate modern guerilla warfare all over the world, from the African jungles, through Latin America and into central Europe.
Auftragstaktik
A set of grand tactical miniatures rules depicting late 20th Century and early 21st Century land combat, with a strong emphasis on command and control aspects.
Aquazone
An interesting set of submarine rules.
Bassa Intensit
Modern low-intensity warfare rules for wars all over the world. (Italian).
Battle of Ia Drang
Rules for 1/72 scale figures covering 2 battles between US 7th Cavalry and VC Forces.
Battlegroup
Ultramodern Rules for 1/300th scale at Battalion Level. Must join the yahoo group to download.
Bekaa Blues
Lebanon 1982 Modern mico-armour rules by Erwin Sablon and Karim Van Overmeire.
Boots, Tracks, and Rotors
Modern-era operational-level land and air combat (naval rules under development) covering NATO vs. Warsaw Pact, both Gulf Wars, and potential future conflicts. 25km/hex ground scale, brigade/division/air squadron unit scale.
Breaking News - Warfare in the Media Age
The rules recreate the tension of today’s battlefields, scenes of difficult operations that are often called “peace keeping” missions, with the additional presence of civilians and the media.
Brigade Commander
Each model represents about 4 vehicles, inspired aby an article in Wargames Illustrated many years ago.
By Fire and Movement
A "big game" variant of the Lightning War/Red Storm gaming system.
C3i
Chaos, Confusion, Cowardice & Incompetence? - Outline for night fighting and Fighting In Built Up Areas.
Charlie Foxtrot
The most realistic SpecWar game you have ever seen. This is the only game that blends RPG and miniatures together for an ultimate gaming experience.
Cold War Naval Battles
Originally published as Modern Naval Battles, a series of three boxed card games for two to six players based on (then) present day sea power with an emphasis on action. It was introduced in the late 1980s by 3W, Inc. of Cambria, California.
Contres Les Viets
A set of adaptations for Crossfire Rules to reflect the special circumstances of the War in French Indochina between 1945 and 1954. You have to have a set of CrossFire and the Hit and Dirt supplement.
Counter Attack
These are a set of 21st century skirmish rules. They are generic in nature and are geared toward platoon level games. If multiple/experienced players are playing then a company level game is reasonable. This is a playtest version.
Counter Terrorism Force
A skirmish type game of counter-terrorist forces engaging terrorists in locations around the world.
CQB
CQB is designed as a skirmish system with emphasis on rapid play rather than as a detailed simulation. The rules are designed for the players to take the role of the "good guys" be they SWAT, SAS or Delta Force and the umpire to play the "forces of evil". 
D10 Yom Kippur
D10 rules for the 1973 Yom Kippur war in 3mm. 
De Bellis Vietnam
Quick and dirty rules for wargaming Vietnam.
Destroy Suppress Neutralize
A set of untested rules generic modern artillery rules. Comments to the author are welcome at: email. Please mention Artillery in the subject line.
Dinky Dau
A set of simple Vietnam rules, originally written for use at show participation games.
EmCon C
EmCon C is an operational-level naval rules set intended to portray fleet actions of the late 20th and early 21st Centuries. It is intended as a companion game to the Boots, Tracks, and Rotors operational air/land wargame.
Enfilade
A new set of skirmish rules under development by Ian Shaw. Covers 1914 to 2010.
Execute,Execute,Execute
FBI hostage game.
Extreme
Quick and Dirty Moderns. A very quick, and extremely dirty modern squad skirmish system with a one roll to-hit/kill system. An average 8 figure per side skirmish can be fought in less than 10 minutes.
Fast Play Jet Rules
The game is meant for 1/600 Aircraft, used on a Hex Map. In addition to the Hex Map and model aircraft a d100 is required, as well as some markers for radar lock, missiles and damage.
Fast Play Modern
An old set of rules by Bernard Garaty that simplify modern warfare. Designed for 6mm and uses a D10.
FireForce
Modern rules for 15mm.
Fireteam II
Modern Skirmish Rules by John Armatys.
From The Delta To The DMZ
A LOTR Strategy Battle Game variant for the Vietnam Era. You are required to join the Yahoo group and the rules can be found in the files section. 
FUBAR
One page Modern/SF small unit action rules. 
Full Jacket Potato
Rules for Small Unit Actions in Vietnam 1963-1975.
Gators
Modern US Marines invasion of an island - LCAC's, helicopters, LAV's, Harriers, everything a real MEU uses. This is a complete game with maps and counters. 2 players.
Go In and Sink
Modern naval rules.
Ghost Recon Evo-s
Takes the basic core rules from Battlefield Evo, and adds a little more details and my ideas, to make it a smaller scale game.
Grunts, Leathernecks & Charlie
Players who are interested in a FUN and FAST Vietnam game system can consider these rules a flexible framework for use. Play can be quick and easy OR made more realistic and slower by adding advanced options.
Hex Command Mechanised
The game system shortens the time it takes to play miniature battle games because combat is streamlined, and movement can be greatly added by the use of a hexagon grid. Covers the period 1938 - 1958.
Hordes in the Nam
HOTT variant for the modern wars in Vietnam.
Hotspots
Hotspots is a wargame with a new playing system in which two players must both: choose a home map, choose home force colours, choose a mission, then buy their units for deployment. In order to win, a player must complete their mission requirements as well as preventing their opponent from completing theirs.
HOTT for Modern
An adaptation of Hordes Of The Thing to Modern rules while retaining the simplicity and spirit of the original rules. Scenarios .
Incoming
Vietnam conversion for Crossfire by Barrie Lovell the author of Free Fire Zone.
Incoming
A set of one-page, fast-play rules for WWII, post-war and modern combat at the operational level.
Instant Thunder
These rules provide an abstract representation of air to air combat between jets. They are designed to be equally suitable for solo as well as two players. The scale is individual jets. Scenario Pack Available.
Iraqi Roads
A rulesystem for battles in todays iraq. Also contains armylists and figures.
Jihad
Skirmish rules for US and Insurgents to compliment Stan Johansen miniature range.
Jolly Irregular Fun
Wargames rules are a set of "Little Wars" type rules, intended for use with Irregular's toy soldier range. Great fun.
Krunch A Commie
Quick and simple rules for armour and infantry combat in the 1950s and 1960s.
Land and Airborne Assault
Land and Air Assault are free war game rules. They have been designed to cover the full spectrum of modern warfare from 1950 to the present day. They cover the changes in warfare from the mid twentieth century to the start of the twenty first century.
Lock N Load
A tactical board wargame for Vietnam. A demo version of the game can be downloaded.
Low Level Hell
The game is a Party game designed to give an impression of what it was like to fly a helicopter during combat in the Vietnam War, there are several different scenarios that reflect different missions that were carried out by helicopters. The rules are based on 'Silent Death'.
Maxim To Minimi
Skirmish Rules from 1900 to Today by Jason R. Weiser.
Medal of Valor
Medals of Valor is a system for recreating skirmish and tactical combat during the 20th Century. These are low intensity rules designed for fast play and fun.
MiG Alley Ace
MiG Alley Ace is a quick and easy jet air combat game pre missile air combat from 1945.
Mig Madness
Korean War Air Combat as Migs battle Sabres in Mig Alley. This is a variant of the WW I aerial combat battle.
Modern GQ
A set of modern naval rules based on the popular "General Quarters" WW1 and WW2 rules. At the rules homepage there are additional GQ rules/aides.
Modern Lightning War 172
Rules for 1/72 and 1/76 figures. Fight with 6 platoons per side and the basic object of the game is for each side to gain a number of victory points.
Modern Lightning War 300
Rules for 1/300 figures. Based on 1/72 rules by the same author but written specifically for micro armour. 
Modern Micro Armor
This is an introductory rules set for GHQ's Modern Micro Armour land warfare game. 
Modern Skirmish
Snapshot Skirmish Rules for Modern Urban Combat.
Nam 69 - Vietnam Skirmish Rules
The focus of the rules is 'fast play' and therefore, they will give a good feel for 'fast' combat in a jungle combat zone. More downloads from Homepage.
NATO Modern Armoured Combat
Armoured combat in western Europe or Iraq in the 70's - 90's.
Nouvelle Guerre
Beta test version of a fast-play game for the Modern Age.
Operation Gothic Serpent
Black Hawk down, demo game.
Original Recon
This is the original RECON game from RPG Inc. It was released by in the early '80s. It a fun little game, it was written for use with miniatures as a role-playing game.
Over There
Features a very original, simple and intuitive rules system that is universal enough to play well in almost any setting, with many additions being currently developed to cover any period from the Second World War through modern and futuristic warfare.
Phantoms
Phantoms is a quick and easy modern air combat game covering air combat from 1960 to the present. Page includes supplements and aircraft charts.
Police Action
6mm Vietnam Rules.
Pz8 1950-1969
2 page rules for 6mm figures based on Mechanized Warfare Rules.
Pz8 Aerial Combat 1935-65
2 page rules for aerial combat.
Quick-Play Low Intensity Warfare Campaign Rules
Gives some background to Platoon/Company Vietnam wargames.
Quiet, Ugly Men - Low Intensity Warfare Campaign Rules
A more detailed set of campaign rules for Platoon/Company level wargames.
Rangers!
US Army Rangers try to rescue hostages in an urban environment. Maps and counters included. This is a variation on the GATORS! game. 2 players.
Rapid Fire - Modern
Amendments for the Rapid Fire rules for use after WWII.
Rat Six
Vietnam Tunnel rules game. Now download the expansion Is It Worth A Rat's Ass
Red Banner
A set of simple rules for modern naval games.
Red Skorpion
Quick Play Russians vs Afghans Skirmish Rules. Directors Cut also available.
Red Star White Star
Modern Naval rules for the 21st Century. They give an accurate but manageable game in 2-3 hours. 
Red Storm
Modern rules where the basic unit of control is the battalion. This is a unit of individual bases where each base represents a company (or squadron of tanks). For small scale miniatures.
Several Klicks in the Nam
Vietnam rules for company sized actions using a hex map.
Shell Shock
A fast playing, adaptable and robust wargame system. It brings the flavour of war to a tabletop game. More units on the homepage.
Shock and Awe
The Cold War is over. This game has been designed to reflect battalion to brigade size ultra-modern warfare both in the real world and also in what could be called Tom Clancy World. Those seeking a game of number crunching data and complex mathematical tables should look elsewhere.
Sinai 1967
Operational level mechanised warfare where 1 base is a battalion. The rules cover the Sinai campaign in 1967. Revisions here.
Skirmish '90
A set of rules for wargaming in the 20th century.
Special Ops
Prepare to lead your troops on the covert mission, you are the elite of the elite. You seem to attract the dangerous missions. Will the mission be successful, will you be compromised, only time and skill will tell.
Steel Inferno
A simple combat system that aims to reflect the principal aspects of modern armoured warfare. It includes hidden movement and command and control.
Storm of Steel: From Seoul To The Yalu
Supplement for Storm of Steel rules covering The Korean War.
Storm of Steel: Siege of Dien Bien Phu
Supplement for Storm of Steel covering the Vietnam War 1953.
Subs and SAMS
A set of modern naval rules and a VERY early prototype by Phil Barker.
Ten Rounds Rapid Modern
Modern fast play rules for 20mm.
Ten Rounds Rapid Modern Organisations
Organisations details within this file for TRR.
Tet a Tet
A Quick And Dirty Set of Tet Offensive House Clearing Rules for the Vietnam War.
The Book and Gun
A variant of the popular The Sword and The Flame colonial rules designed to allow modern war gamers to game fire team level actions in a neo-colonial or "3 Block War" environment. These rules abstract the role of armour and air support to increase playability for the small unit action.
The Lebanon
A simple set of rules to wargames modern Middle East games.
The One Brain Cell Vietnam Rules
Beer and Petzel rules for the Vietnam War.
The Sharp End
Another experimental set of modern rules by Phil Barker.
The Smell of Napalm
Vietnam skirmish rules where a player controls a squad of men. Ideally suited for LRRP and SF games.
The Sword in the 20th Century
A variant for TSATF usable for colonial Actions "Between the Wars" in places like the North West Frontier, Iraq, or China. Suitable for TSATF-Like actions in the Back of Beyond also. Not a complete rules set, players will need Larry's "The Sword and the Flame" rules to use this.
The War Game
This is not a standard war game in the commonly used sense, but a large multiplayer game that lasts for months. This site provides all materials necessary to begin the game. 
Threat
A modern-era miniatures wargaming ruleset that was designed to be a fast-moving fluid game of modern tactical ground combat using 1/285 scale miniatures. 
Tour of Duty
This set of rules is primarily intended to cover small-scale actions in the Vietnam War between US forces and Communist forces. The intention is to emphasise the features which make this war of unique and special interest. 
Typhoon
A set of miniatures rules for modern jet combat, specifically designed as an introductory level game for those gamers who wish to use the most current aircraft, but to not get bogged down in the complexity of hi-tech jet warfare. 1/444 scale. 
Vietnam Crossfire
Crossfire conversion rules for Vietnam.
Vietnam - Flames of War
Rules from Wargames Illustrated for the Battle of Ia Drang Valley in Vietnam.
Vietnam Fury
A Vietnam War version of Space Fury rules.
Vietnam Skirmish
Rules for Vietnam in the 60's.
Vietnam Skirmish(2)
Experimental Rules for Vietnam based on authors WW2 set.
Vietnam Skirmish(3)
20mm rules for Vietnam Skirmishes - under construction.
Warhammer Nam
Warhammer NAM is an unofficial supplement for Warhammer 40K (3rd Edition) to play Vietnam war (1965-1972).
Warzone Modern Battles
A set of free modern Wargaming rules for 1:72 or 20mm Squad/Platoon games.
Where's Charlie
Platoon size Vietnam rules for 15/20mm by Pete Jones.
WRG Infantry Action Rules 1925-1975
2nd Edition of the WRG rules for modern warfare.