What the mod changes

Every change in the mod, what it does and the measurement that proved it. This is the detail that used to live in the repository's README; the README now links here instead, so the project's front page does not open with a list of every cutscene in the game.

Spoilers

This page names scenes, bosses and late-game locations. If you have not played Twinsanity, the README has the feature list without them.

Cutscene skip status

Hold △ during a cutscene to skip it, and every skippable scene shows HOLD △ TO SKIP in the bottom letterbox bar.

Each level edit below is tested on the rig: the scene is played in full, then skipped from the same save state, and the rig checks that gameplay comes back sooner and that the player ends in the same situation. Why this needed fixing at all is on Cutscenes; the executable side is on Executable patches.

Status	Cutscene	Full → skipped¹	What the skip also does
✅	Wired-in skips: Aku Aku training, Totem Hokum, Dingodile, Uka Uka, Henchmania, …	—	Executable patch only
✅	Beach: Aku Aku crate (mask)	—	Hides the crate's Aku Aku
✅	Beach training	6.1 s → 4.6 s
✅	Angry skunk	11.4 s → 4.6 s
✅	Rooftop Rampage	13.2 s → 4.4 s	Both level files: the director is in roof01 and roofcor2, and the second was missed
✅	Rooftop Rampage, second copy	6.6 s → 4.1 s	The scene also runs from roofcor2 (the Nina route) and had no skip there at all. Found by tools/skip_survey.py; prompt verified on screen
✅	Academy hub	16.1 s → 4.5 s
✅	Treasure room	22.9 s → 4.4 s
✅	Slip Slide Icecapades	30.7 s → 4.8 s	Crash and Cortex go to their end marks
✅	Iceberg Lab	34.5 s → 4.5 s
✅	Classroom Chaos	10.8 s → 4.2 s	Switches you to Cortex, as the scene does
✅	Core intro	21.0 s → 4.1 s	Cortex and Nina leave, as they do in the full scene
✅	Bell tower (Madame Amberly)	21.4 s → 4.0 s	Cortex gets control and the fight starts, as in the full scene
✅	Psychetron room, Coco	50.0 s → 9.7 s	Crash, Cortex and Coco all go to their end marks
✅	Psychetron room, Cortex and Nina	22.9 s → 9.8 s	Still plays the FMV and the scene that follow (both times include the FMV)
✅	Dorm room	28.4 s → 4.0 s	Switches you to Nina, as the scene does
✅	Walrus chase	10.8 s → 4.1 s	Starts the chase music. The developers' unfinished skip warped the walrus onto Crash, killing him as control returned; it now stays behind him as in the full scene
✅	Rockslide Rumble	25.3 s → 4.0 s	Crash and Cortex go to the top of the slide, the music starts and Crash mounts the Humiliskate
⛔	Totem falling	—	Left unskippable. Skipping drops Crash into the totem chase before it is set up, and he dies.
🚧	Party arena	—	Work in progress (mod/levels-wip): the scene is switched on by beating the Mechabandicoot, which the rig cannot do yet

_{¹ Time from the start of the scene until the player has control again. The skipped times include about 2.5 s of the rig's own wait and button hold.}

Cutscenes that are movies

Some of what the game calls a cutscene is a pre-rendered movie rather than an in-engine scene - the Iceberg Lab interior plays 53 seconds of H02_B.PSS every time you walk in. Those are not in the table: they already stopped for ✕ in the retail game, and now answer △ as well. See The movie player.

Known differences after a skip

A few level hints do not appear: "Clear a path for Cortex!", "Use ◯ to crouch", "Tap □ to rapid fire". In Iceberg Lab and Classroom Chaos the character stands a few steps from where the full scene would leave them.

Aku Aku invincibility

Collecting a third mask sets Crash's invincible flag for eight seconds, but the damage handler lets any hit of 50 or more through - and every explosion (TNT, Nitro, bombs) deals 100. So an invincible Crash still died to TNT.

The patch in mod/elf_patches.txt makes invincibility also block damage flagged as an explosion. Other instant deaths still go through. The same flag covers the two-second grace period after a hit, so explosions no longer kill you during it either.

Rig-tested: TNT while invincible leaves Crash at full health; without invincibility it still kills. Enemy hits are unchanged. The addresses are on Addresses - 0x137510 is the damage handler, whose info struct carries the flags at +0x10, and 0x13F9A0 is the third-mask pickup.

Invisible Crash after a cutscene

After a hit, Crash flickers for two seconds: the grace-period code hides him for the last fifth of every 0.2 s while he cannot be hurt again.

When a cutscene takes control of the player - and again when it hands control back - the game resets that state machine without ending it, so whatever the flicker last set sticks. One time in five that is "hidden": Crash is missing from the whole cutscene, and stays invisible in gameplay afterwards until something else shows him.

The reset now goes through a stub that ends a running grace period properly, making the character visible again and clearing the grace invincibility.

Rig-tested with a worm hit followed by the Aku Aku crate tutorial: without the fix Crash is gone from the scene and from gameplay after it; with it he is visible in both, and a normal hit still flickers for exactly two seconds.

The same family of bug

This is the same shape as the Dimension Skip speedrunners use: a cutscene assumes the player arrives in a known state, and misbehaves when they do not.

The rest, in their own pages

The other shipped changes are documented where the machinery is explained:

Change	Page
Shadows on crates	Graphics
A beaten boss stays beaten (Tiki Mon contact damage)	Objects, instances and agents
Faster loading, and the 60 Hz frame budget	Loading and streaming
Movies at their real speed, and movies answering △	The movie player
How the skip prompt is drawn	How a cutscene is made
How the ISO is built and verified	Building the ISO