Note that this game doesn't like to run in Windows 10. There is a fix described in the discussion pages on Steam, which works for a lot of people, but be warned that it won't run without some tinkering. It is no longer for sale in the Steam store, though the page is still up.

Also, since we're in the wilds of 2019 and keys are not as eternal as we once thought they were, I need to say this:

This key is an old key. It was purchased several years ago. To the best of my knowledge, it's as fresh as it was the day it was bundle-bought. I haven't used it, and I haven't given it away. However, many indie developers revoke unused keys these days for no reason, so it's not possible to rely on keys the way we did once.

If the key doesn't work, please contact me. If I can fix the issue I certainly will.