This is currently 75% off the Steam price, and the 30% off that AU code works as well. I have also incuded to 10 cents credit in the final price. Cheapest ever. I just hope there is still an online community.
Another bargain is call of Cthulhu Dark Corners. The 30% off code should work for that too, dropping it to around $2. If you love Lovecraftian things, it is a must get. The last mission is a bit buggy, and you may need to use a tool to lock it to a single core, since it crashed 5 years ago for me an AMD dual core unless I did that.
If you want a Lovecraftian mythos boardgame, try Arkham Horror. Cthulhu & co are very popular on Kickstarter at the moment.
Be aware GMG is timing out alot at the moment. Too many hits?
This game is terrible. Not worth downloading for free.