The backpack is the one item on this site’s tool list that does not come from the press kit. It comes from the game itself: the Steam achievement Big Pack — “Wear a backpack”, unlocked by 27.8% of players as of 5 August 2026. Backpack frames are also clearly visible on characters in the official June 2026 screenshots, including one carrying a large red buoy on an external frame.
That makes it better documented than most of the named tools, because an achievement string is a first-party statement about a mechanic rather than a marketing list.
What is confirmed
It is worn, not carried. The achievement says “wear”, and the game distinguishes that from the carried tools — you can steal a friend’s binoculars, but the backpack has its own verb.
It is not automatic. 27.8% is a low enough figure that wearing one is a thing you have to find and do, not something the game equips you with. For comparison, 81.5% of players have crossed the drawbridge and 34.9% have visited the map — so the backpack sits between those two milestones in how commonly players encounter it.
It has visible external capacity. The official screenshot shows a frame carrying a large object, which is consistent with the backpack being a way to move things that would otherwise occupy your hands.
Unpublished: how many slots it has, whether it is required for anything, whether it can be passed between players, and whether different backpacks exist.
The hip slot
There is a second worn slot, confirmed by a second achievement: Big Help — “Wear something on your hip”, at 6.3%.
Two things follow from the wording. First, “something” rather than a named item — House House did not commit to what goes there, which is why this site does not publish a name for it either. Several fan wikis call it a holster; that word does not appear in any first-party source.
Second, the achievement is called Big Help. In a game where the accessibility notes mention that “some items in the game can improve accessibility, such as highlighting interactive items,” an achievement named Help for wearing something on your hip is suggestive — but suggestive is all it is, and this page will not build a mechanic out of a pun.
| Achievement | How it unlocks | Global unlock rate | |
|---|---|---|---|
 | Big Walk | Cross the drawbridge | 81.5% |
 | Big View | Visit the map | 34.9% |
 | Big Pack | Wear a backpack | 27.8% |
 | Big Sit | Ride the chairlift | 8.2% |
 | Big Help | Wear something on your hip | 6.3% |
 | Big Ride | Ride the train | 4.3% |
 | Big Climb | Reach the highest point | 4.0% |
 | Big Tunnel | Enter a big tunnel | 1.3% |
 | Big Wall | Go beyond the wall | 0.2% |
 | Big Goodbye | Hidden — Steam does not publish the description | 0.2% |
 | Big Game | Hidden — Steam does not publish the description | 0.1% |
 | Big Makeover | Get shiny | 0.1% |