TinySol v1.3, a Klondike Solitaire game for vintage DOS computers, released

TinySol v1.3 Released

TinySol, previously known as MonoSol, has released version 1.3. This free Klondike Solitaire game is specifically developed for vintage DOS computers, emphasizing playability on older systems, including those with monochrome displays. The latest version was made available for download on May 25, 2026, alongside 640 winnable savegame files.

Broad Compatibility for Vintage Systems

The game is designed to run on most DOS computers. Testing confirms compatibility with real hardware such as an IBM 5150 (8088, 640KB, CGA, MS-DOS 3.30), a GRiDCase 1520 (286, 640KB, CGA/ATT, MS-DOS 3.30), and a Pentium 233 (MS-DOS 6.22, VGA). It also functions in emulation environments like 8086 with 64KB RAM, MS-DOS 2.0, CGA, and DosBox.

TinySol automatically detects video modes, with specific support for 640x400 AT&T 6300 mode on some GRiD computers. Users can switch video modes using F1-F4 keys. The game was written in x86 Assembly in early 2022 with the goal of being small enough for ROM inclusion and sharp on GRiD gas-plasma displays.

Public Appearances and Distribution

TinySol 1.3 premiered as hard copies at the Vintage Computer Festival Southwest 2026 in Texas on May 29, 2026, before its online release. Sixteen copies were distributed on various diskette formats, including 360K, 1.2MB, 720K, and 1.44MB, complete with hand-drawn artwork and manuals printed on vintage paper. The game was successfully demonstrated on a 286 running FreeDOS and an 8088 with 256KB of memory at the event.