Check out the few Turbo Grafx-16 emulators available. Magic Engine, while probably no longer supported, is one of the best. The demo version gives you like 5 minutes or so of unlimited play. Just use a save state, and restart the game and you get another 5 minutes (may be 15, it has been a while since I used it).

The point is, there are options available to play your legally purcahsed CD games today.