Brethren Adventure ArchivePC adventure, 1990–2010

Play them legally

Running old games legally: the engines that make it possible

Three lawful routes to playing old adventure games on a current machine: reimplemented engines, official re-releases, and freeware releases the rights holders themselves allow. Plus how to check whether a download is legitimate.

By Brethren Adventure Archive Editorial Team · Published 2026-11-11

There is a legal route for a large part of the 1990s and 2000s adventure catalogue, and it is not one route but three. They differ in what you receive and what you are allowed to keep.

Route 1: an engine that runs games you already own

The engine reimplementation is the cleanest case. You install a program that reimplements the game’s engine, and it plays the original game data — which you must have obtained yourself.

ScummVM is the main project for adventure games. Its downloads page distributes the engine, and its games page lists what it supports. The engine is the free part; the game data is not.

Two things to be careful about:

  • The engine does not include the games. Nothing in the engine’s download gives you a game you do not already have.
  • “Supported” is not “runs perfectly”. The compatibility page tracks per-title status against a specific release, so check the title rather than assuming.

For games whose content was tied to the whole machine rather than a separable engine, the equivalent tool is a full-machine emulator such as DOSBox, which reconstructs the PC environment the game expected.

Route 2: a re-release you buy

The second route is a modern commercial re-release. Storefronts sell older PC adventure games prepared to run on current systems; GOG.com’s adventure catalogue is one example that built part of its business on exactly this, and general platforms carry many of the same titles.

The advantage is that the work of making it run is someone else’s, and you are dealing with a vendor and a receipt. The limitation is coverage: a re-release exists only where the rights holder chose to make one. Much of the catalogue has none.

Route 3: freeware released by the rights holder

The third route is the one most people miss. Some games were released by the people who own them as free downloads, permanently.

ScummVM’s games page maintains a list of these — titles distributed for public download with the rights holders’ permission, alongside the engine download. This is the only route where obtaining the game and obtaining the engine are the same act, and both are sanctioned.

For a first try at the genre, this is the correct starting point: availability is settled, so any problem you have is with the game, not with the legality of your copy.

How to check a download before you install it

Apply this to any source you are unsure of:

  1. Who is publishing it? The rights holder’s own site, a storefront with a receipt, or the preservation project’s official page. If it is a file index, a mirror, or a forum attachment, stop.
  2. Is the engine separate from the data? If a site offers “the complete game, preinstalled”, ask who licensed that bundle.
  3. Does the project itself list it? For engine-based play, the project’s games page is the authority on what it supports, and its freeware list is the authority on what it distributes.
  4. Does the site describe a legal basis? A freeware release has a citable permission. A site with no explanation of why it may distribute a game does not.

What still cannot be done legitimately

Some titles have no route at all: no re-release, no freeware release, and no legal way to buy the data files. For those, an engine will not help, because the engine deliberately does not supply content.

That is the honest answer, and it is worth saying plainly instead of pointing at a workaround.

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