Mac App Store

Mac App Store is the simplest way to find and download apps for your Mac.

To download Horror Vacui 2 from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

Horror Vacui 2

By Shaun Inman

Open the Mac App Store to buy and download apps.


Horror Vacui is a two-player abstract strategy board game based on the antiquated notion that nature abhors a vacuum.

Two players, Water and Earth, take turns placing pieces on the board. The temperature of each piece affects adjacent pieces. The player with the most normal temperature pieces when the board is full wins!


- Keep your opponent on their toes with Hot and Cold pieces.
- Try to Normalize as many of your own pieces as possible.
- No good moves? Sacrifice a Hot or Cold piece to Normalize another.
- Watch out for the devastating Inferno and Ice Age Extinction Level Events!


- Same engaging strategy
- New dexterity-based reels and familar luck of the draw cards
- Two board sizes for longer or shorter play times
- All new 8-bit isometric graphics
- Unique temperature and element animations
- Expanded and remixed 8-bit music plus all new sound effects


Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4

Customer Reviews

Great game, needs one more preference

Great game, great graphics, great nostalgia value. The 8-bit music contributes a lot to the nostalgia, and it clearly exemplifies the strength of Shaun Inman's many diverse aptitudes.

But it's really annoying when you're trying to play a strategy game. The gameplay music simply cannot be mentally tuned out unless you have superhuman daydreaming capabilities. It's great music but it's not appropriate for this type of game. I can of course mute the system volume, but I would like to hear the sound effects, and I might like my own music sometimes.

I solemnly swear to return here and re-rate the app at five stars if a music on/off preference is added.

Indie game doesn't disappoint!

As a child of the 80s, I hold a special place in my heart for pixels and chiptunes. Shaun delivers both in a clever reimagining of Reversi. The addition of hot and cold to the pieces, as well as the ability to sacrifice a piece to change the temperature of an existing piece (rather than placing it on the board) adds layer of depth that feels great. Oh, and woe betide you and your opponent if either of you draws an extinction level event!

I will definitely be playing this one again and whether you were raised on NES or PS3, you should check it out too.


This game is excellent. You should buy it.

But, I agree that volume controls would be a welcome addition. I understand on iOS this isn't really necessary, but on the Mac (and especially a game like this that can easily be played in a small window), the ability to lower or disable the music and/or sound effects while doing other things would be quite useful. Some sort of keyboard controls would be nice too.

Aside from that, the game is beautiful and addictive.

Horror Vacui 2
View in Mac App Store
  • $1.99
  • Category: Games
  • Released:
  • Version: 1.0
  • Size: 1.3 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.6 or later

Customer Ratings

Current Version: