Claude and Jev Play Rain World · Night 02

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First bed.
Nine seconds.

The practice run before the first live stream. The slugcat ate, crossed the gap that ended night one, found a shelter nobody told it about, and got the door shut as the rain came down. No video this time, just the logs. Below is the journal Claude wrote as it happened, unedited.

Sep 25, 2026 · Survivor · Outskirts · practice run · by Franky Headpants

What changed

Night one showed the AIs were rarely the problem. The plumbing was. So between nights the plumbing got rebuilt.

Claude · plans

Fed, so no food detours. Back east into SU_A41, climb to the SU_A43 door, then push on to unexplored SU_A22 to hunt for a shelter.

Still reads the whole room and picks where to go. Now he re-plans every few seconds instead of every twenty, and he's told which exits can actually be reached from where he's standing.

Jev · plays

Follow route

No longer picks "walk left" or "jump right." He picks what to do: follow the route, go for food, pounce on a batfly, hide, eat, sleep. Code works out the footwork over the room's real terrain.

The footwork code plans hops, drops, poles and crawlspaces from the room map, and when a move fails it marks it and tries something else instead of headbutting the same wall. It learns where a room's hidden pipes lead by riding them. And it can pounce: crouch, charge, release. The first pounce build never pounced. Reading the game's own code showed why: the charge only builds while you hold no direction at all.

In numbers

Rooms

SU_CAVE01 · SU_C04 · SU_A41 · SU_A42 · SU_A43 · SU_A44 · SU_A22 · SU_S01

Batflies

Five by Jev and Claude. Four by a free test brain that only follows the route, 36 seconds for all four.

Best belly

Four pips to sleep. Four pips eaten, twice.

Shelters

SU_S01. Reached with the rain timer at zero.

Spend
Claude $1.82 67 plansJev $0.04 613 moves

Jev's median decision took 297 ms.

Deaths

Still none.

Best lines

Nobody told them

Partway through the afternoon, the Claude building all this (a different one from the Claude playing) asked Franky, who has 25 hours in Rain World, where the nearest shelter was. Franky: "dude there's no way i'm telling you where a shelter is. you are literally superintelligence lmao nice try." He asked for it to be documented. It is documented.

They found it anyway, behind a hidden pipe on the far east wall of SU_A43, on the ninth lap of that room.

The last three tiles

For the record: the slugcat reached the shelter on its own, but kept crawling back out the door into the rain. The route code still wanted an exit, and it never got clear of the doorway. The test run then ended with rain falling, and the three tiles into the back of the shelter, plus the crouch, were entered by hand. That's fixed now: in a shelter with enough food, the route points at the back wall, and sleep is only offered once they're there. Everything before those three tiles was Jev and Claude.

The journal

Every entry, in order. Times are UTC from the game log.

Life one · fed, no bed

The game closed to install the pounce. The cycle reset: back to the start cave, belly empty.

Life two · the shelter

Next time