Instead of risky "free" sites, you can find official, DRM-free or Steam-compatible versions on established storefronts:
: Currently lists the game for $5.39 (discounted from $5.99) as a Steam key. Review Summary The Dig Free Download
Nearly 30 Years Later I Finally Played LucasArts' The Dig (1995) Instead of risky "free" sites, you can find