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.
Civil War Battles Updates
Updates for the 4 main documents for the Civil War Battles series have been released today. Ken Miller has done an excellent job refining these documents. These can be applied to any game in the series you own. They are located at the top of the Civil War Battles section on the Updates page.
Napoleonic Battles Updates
The final three titles are brought up to speed. This is a major update implementing a 2D & 3D* Graphics overhaul and many new engine enhancements. This process is bringing all the games in the series up to the same level. In this final round the following games are Campaign Marengo, Republican Bayonets on the Rhine and Wellington's Peninsular War. If you wish to check the series out the Demo has been updated to the current version as well. Grab them on the Updates page. *Only select titles will receive the new 3D maps with this round of updates.
Musket & Pike Update
The 1.04 Update for Seven Years War has been released today adding in new game engine features as well as the 3D views for the game. You can grab it off the Updates page.
Napoleonic Battles Updates
We continue to roll out updates for the Napoleonic Battles series. This is a major update implementing a 2D & 3D* Graphics overhaul and many new engine enhancements. This process is bringing all the games in the series up to the same level. In this round the following games are Austerlitz, Eylau and Leipzig. Grab them on the Updates page. *Only select titles will receive the new 3D maps with this round of updates.
First World War Campaigns Updates
Updates for all three of the games in this series have been released, adding in all the new changes frm the Serbia '14 release. They can be found on the Updates page.
Panzer Campaigns Updates
Updates for the 4 main documents for the Panzer Campaigns series have been released today. David Freer has done an excellent job refining these documents. These can be applied to any game in the series you own. They are located at the top of the Panzer Campaigns section on the Updates page.
First World War Campaigns Release!
Panzer Campaigns Updates
Two Panzer Campaigns titles and been updated - Japan '45 & Japan '46. Visit the Updates page to download them both.
Musket & Pike Updates
Updates for the two Musket & Pike games have been released today.
We have the 1.03 update for Seven Years War which features the new Expansion Package - A large multi-battle hypothetical campaign set in 1757, multiple company scale scenarios and several hypothetical large actions using big maps not used in full in the stock scenarios.
Also released is the 1.06 update for Renaissance bringing some OOB alterations, scenario fixes and other tweaks.
And finally we have a free add-on for Campaign 1776 from Rolf Hall which add's in new 3D icons for the game.
Visit the Updates page to download them all.
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.
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.