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.



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...
Visit the Updates page to download them all.

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Double Release!

JTS is proud to announce the release of two new games - Campaign Shenandoah & Japan '46. Click the titles to go to the respective product pages or go directly to the store to pick them up!

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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.



Various Updates

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.

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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.

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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, Tobruk '41, 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.

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Panzer Campaigns: Japan '45 released!

The latest addition to the Panzer Campaigns series of games is here! With the capture of Okinawa and the Philippines in 1945, the Allies had captured important territory in the western Pacific from which to base air, sea and land assets with which to engage in an invasion of the Japanese main islands. They called the entire project "Operation Downfall" and the first part of this colossal undertaking was called "Operation Olympic." The goal of Olympic was to capture airfields and ports in the southern half of the island of Kyushu from which they could use for the next phase of Downfall which was called "Operation Coronet," the invasion of the island of Honshu. Further details can be read on the product page.

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Campaign Eylau-Friedland released!

The latest addition to the Napoleonic Battles series of games is here! Campaign Eylau-Friedland recreates the battles of the campaign in Poland of 1806-07. These were fought initially in the frozen countryside of Poland and East Prussia during the winter months of December through February and in the spring of 1807 at the end of which the French and their allies emerged victorious. Now you can take control of either the French or Allied armies and refight the famous battles which decided the fate of the Fourth Coalition and brought about the birth of the Grand Duchy of Warsaw and saw the Allies foiled once again by Napoleon. Further details can be read on the product page.


Panzer Battles: North Africa 1941 released!

The latest addition to the Panzer Battles series of games is here! Panzer Battles: North Africa 1941 covers the campaign in North Africa which was the primary focus of both Italy and the British Empire in the first half of World War Two. Further details can be read on the product page.


The Seven Years War released!

The latest addition to the Musket & Pike series of games is here! The Seven Years War highlights the European battles of this global war, featuring not only the battles of Frederick at places like Rossbach, Leuthen and Zorndorf, but also Ferdinand's battles such as Minden and Bergen. Further details can be read on the product page.


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