Thread by @GeePawHill

@leeintx Okay, first the general concept, then the two-gas variant. Only 1 gas or liquid or solid or solid tile is allowed to occupy a cell. Liquids and gases have a "natural" limit to how much can be put into a tile, in the case of water, 1000kg. *But*, game physics allow exceptions.

@leeintx Pace Ryan in the other answer, it is not a bug. The system works as designed. The developers have repeatedly confirmed this. It wasn't designed to simulate actual physics. It has rules and several "magical" machines, for instance, that violate everything about real physics.

@leeintx Tho there are natural limits, we can break those limits by using the rules. and put substances in artificially high quantities into a cell. We always use a combination of two things: convince a substance to over-pressure, keep them from breaking tiles with that high pressure.

@leeintx So. Where does the water go in an infinistore? Into those six tiles inside it. Though they should be able to hold only 6 tons of water, these are holding a total of 130 tons, the equivalent of a 130 tiles full of water at natural limits.

@leeintx Two questions remain: 1) that's crazy mad pressure on those surrounding tiles, how come they don't break? 2) how the hell did we coerce the game into overpressuring in the first place?

@leeintx 1) The six tiles are surrounded except for that little vertical column with airflow tiles and an airlock. Airflow tiles are anti-hydro: the liquid next to them does not touch them, hence no pressure. And airlock and bunker doors are by definition impervious to pressure entirely.

@leeintx 2) There are multiple ways to coerce the game to overstuff a tile, this is the "two-gas" answer. Those two tiles directly right of the airlock contain two different gases.

@leeintx Those gases are trapped there, cuz of the six orthogonally surrounding tiles: clockwise from the top, a solid, a liquid (with a lid on top), a solid, a liquid opening into the six tile area, an airlock, an airlock.

@leeintx Water pours in, hits the first gas. Rules say liquid can pass *through* gas, but it can't displace it, unless it pushes it out of the way, either into free space, or more usually, into another cell of the same kind of gas. But there's no way for this gas to move or be pressured.

@leeintx Same with the second tile of gas. That, btw, is why we use two *different* gases. If they were the same, the liquid would just squeeze them together. Instead, it goes to the bottom liquid tile. Rules say "that's cool", but now you're overpressure, let's resolve that.

@leeintx If we had just another doorlock or airflow left of the liquid at the bottom, we would create a 1-tile infinistore. But we made that little space to the left in order to let it go there, too, to fit a pump. So it balances its pressure load against the others.

@leeintx There are *other* ways to make an infinistore, and a different way to make one for gases. But they all use the 1-cell 1-substance rule combined with some "just passing through" rule that coerces the substance to wind up over-pressured.

@leeintx Aside: other completely magical aspects of the game: the AETN, the steam turbine, and the hydrogen generator all delete heat, which is impossible. Gases in real life mix, as do liquids. Heat moves by radiation in addition to conduction.

It's a game, not a physics simulation.