
PetrifactionUnderRuin
The biggest feature is that it produces state changes such as petrification in real time until it becomes incapacitated. Multiple types of materials can be selected for petrification. The content of the game is an avoidant STG where the ending branches depending on the action in the boss battle.
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About PetrifactionUnderRuin
feature
Bishoujo characters change to various materials (freezing, petrification, waxing, golden, tree-making, soaping, etc ...)Erosion expands with each shot and animation slows down (attack avoidance difficulty also increases!)
Human bosses can also end the battle without defeating them by action (the ending branches accordingly)
Japanese anime style model
In order to express the speed of the enemy and ally while being based on RPG, I quote the battle system of a famous indie game
Since the emphasis is on viewing abnormal conditions, the play time will be around 1 hour when checking all routes. Please note.
More details
Root, a rare user of freezing magic, is suddenly kidnapped one day and throws himself into a battle called "consolidation death game".However, this game was a mysterious one that could proceed without defeating humans by solving the gimmick.
What kind of ending is waiting for the selection of the character and route that the player controls?
Press the button at the right time to attack!
Avoid enemy attacks like STG!
Be careful as the movement speed will slow down when attacked!
Even if you are not good at STG, you can ease the difficulty by selecting equipment and level!
Various options for abnormal condition production
Expression of erosion during state change (mottled, even, from top to bottom)Change the expression for each material (4 to 10 types depending on the material)
Soapy foam expression (5 types including none)
Presence or absence of freezing cold air expression
Material when attacked by an enemy whose material is not specified
Game details
Game details
Game modes
PetrifactionUnderRuin price history
Lowest tracked price: $8.99 (Jul 7, 2026) · current best: $8.99.
PetrifactionUnderRuin reviews
100% positive reviews all-time.
PetrifactionUnderRuin — frequently asked questions
Where can I buy PetrifactionUnderRuin at the cheapest price?
Right now the cheapest offer for PetrifactionUnderRuin is $8.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price PetrifactionUnderRuin has ever been?
The lowest price KingsPrice has tracked for PetrifactionUnderRuin is $8.99 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How can I get PetrifactionUnderRuin at a discount?
Create a free price alert on this page and KingsPrice will email you when PetrifactionUnderRuin drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- Requires a 64-bit processor and operating system
- Processor: 64bit
- Memory: 1024 MB RAM
- DirectX: Version 11
- Storage: 3000 MB available space
Recommended
- Requires a 64-bit processor and operating system










