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Xformer 10, the Atari 800 emulator for Windows 10, 7, and now 11!

It is the 10th generation of the Xformer (pronouned "Transformer") series of Atari 800 emulators first developed in 1986 for the Atari ST. The name is a nod to electrical engineering and the concept of impedance matching; not unlike how an emulator transforms non-native instruction sets and hardware.

This 10th version of Xformer (first released on 10-10-2018) adds Windows tablet and touch-screen support, "tiled mode", "roulette mode", and "time travel" mode. It is also the first natively built Atari 800 emulator for Windows on ARM, and the only Atari 800 emulator granted permission by Atari Corp. to use Atari ROMs.

Please read XFORMER10-INSTALL.TXT for installation and setup directions, and the file XFORMER10_README.RTF for a description of what's new.

Xformer is one of several Apple and Atari emulators developed by and available on:

older releases (with source) for Atari ST, MS-DOS, and Windows 95 are at:

If you have any questions email us at: