Welcome to John Tiller Software
John Tiller Software has been developing quality computer wargames for both commercial and military customers since 1995. In that time, John Tiller Software has developed over 80 commercial wargames and successfully performed over 20 research and development contracts for the Air Force and Navy. Wargames developed by John Tiller Software have received many awards including Wargame of the Year from industry media on multiple occasions. In military education, over 21,000 officers of the United States Air Force have used John Tiller Software's Modern Air Power in the Air University at Maxwell Air Force Base. Wargames developed by John Tiller Software are known for both their user-friendliness and accuracy. They cover the range of military conflict from the time of the musket and pike to present day and the future.
Modern Campaigns Updates
Updates for the entire Modern Campaigns series of games have been released. This round features the "gold" treatment by David Freer and team with a complete overhaul of graphics, sounds and additional content. Visit the Updates page to download them all.
Early American Wars Updates
Updates for the entire Early American Wars series of games have been released. This round features:
- New 3D maps from Old Banshee
- Added 2D magnified zoom
- New 2D graphics from Christopher Osterlund
- New optional rule, Detached units can not initiate melee
- Released the Map Editor
- New maps, scenarios, sounds & more...
Squad Battles Updates
Updates for the entire Squad Battles series of games have been released. This round features the "Top Down Mod" from Richie61 (Ed Pacito) as a tribute to his extensive support for the series both in generating mods, but also in game play - with over 1600 PBEM matches reported at The Blitz club. Ed passed away in 2018. These updates also include a roll up of most of the custom scenarios found around the web generated by a variety of players. We have also released the Map Editor for this series and it is included in the update for each game. Visit the Updates page to download them all.
We have a variety of updates releasing today. Three Panzer Campaigns titles (Japan '45, France '40 & Minsk '44) as well as the Panzer Battles Demo. Visit the Updates page to download them all.
Civil War Battles Updates
With the release of 3.00 for Overland, the new round of updates is finally completed, bringing the series up to the Petersburg level with engine changes and graphical enhancements. To get the update for Overland (or the others) visit the Updates page.
Menu Program Updated
The 1.03 version of the JTS Menu Program has been released. Changes in this version include persistant window, with the Menu remaining open so multiple games can be used in a single session. Also, it now use whatever the default PDF reader program is on your system rather than looking for Acrobat Reader. Head on over to the Resources page to download it.
Panzer Battles Updates!
A new round of the updates bringing this series of games up to the North Africa 1941 standard. Head on over to the Updates page to grab your set.
Panzer Campaigns Gold Releases Completed
The last round of updates has finally arrived. Hats off to David Freer and the WDS team for their excellent work on this series. Further details can be read on the product pages for
El Alamein '42,
and Tunisia '43.
Existing owners please see the Updates page.
Previous releases include Market-Garden '44, Salerno '43, Sealion '40, Sicily '43 , France '40, Bulge '44, Normandy '44, Korsun '44, Kharkov '43, Moscow '41, Budapest '45, Kursk '43, Rzhev '42, Minsk '44, Kharkov '42, Moscow '42, Stalingrad '42, Smolensk '41 & the Demo - Mius '43.