ljyoun: No, it's not. At least, not anymore, since the game's rights were purchased by another company for a Steam release. That version was released, and now they're charging for the GOG version.
Let me guess..... f****** "Nightdive Studios" again! Right?
That company just keep on necromantically resurrecting all the final unwanted scrapings at the bottom of the barrel - "Night Dive" is very apt, they dive for the bottom-most abandoware titles that weren't even worth it for free, they were not worth the time spent finding/downloading them. Then just assume ownership, charging ironically corpse-like methane bloated prices, destroying what little is left of the abandonware/freeware scene and even forcing GOG to stop giving this out for free! Shame on you GOG too for not standing up for us gamers and kowtowing to the likes of these grave robbers!
Mark my words, just watch all the over "free GOG titles" disappear over the next 12 months!