Using the emulator & save states

The classic Carmen Sandiego titles were MS-DOS (and Apple II) programs from the 1980s and early 1990s. To run them today they are wrapped in a DOS emulator, the same approach the Internet Archive uses for its in-browser software library. A few things are worth knowing before you start a case.

The games save your detective, not your case

These titles were built to record your rank and case history between sessions, not to pause a case mid-flight. The original disks wrote your detective record back to the program disk, which is why the games ask for your name. In the emulator that record lives in browser storage, so clearing site data can wipe your detective. A single case is short by design, you are meant to finish one in one sitting.

Save states are an emulator feature, not a game feature

If the emulator offers a save state, that snapshots the whole machine, memory and all, so you can resume exactly where you stopped. This is an emulator convenience layered on top of the game, not something the 1985 code knew about. Use it to step away mid-case; use the in-game save only to record a finished detective.

Keyboard, sound and speed

• The early games are keyboard-driven menus. Most actions are choosing a numbered option or typing a name, so a physical keyboard helps.
• Later deluxe and CD releases added digitized sound and clickable interfaces; the 1985 original is text and simple graphics.
• If a game feels too fast or too slow, the emulator's CPU-cycles setting controls DOS timing. These games are not action games, so accuracy matters more than frame rate.