Super Monkey Ball Banana Rumble

Update 2.20 (v458752) over the base game, SDK 17.5.8. Unity 2022.3.30f1 IL2CPP on NVN, with CRIWARE (ADX sound; the story movies are Sofdec USM files that CRI Mana decodes in software) and FMOD. Modules main, subsdk0 (NintendoSDK_movie) and sdk. The 37 DLC NSPs are licences only. Plays on the Mac at 60 fps, as on the Switch: the title, a new save, the story's opening movie, and the tutorial island (rolling, the camera, the Spin Dash). An unsigned IPA has not been built; iOS is untested.

What it needs

No code of the game is cut. The game asks for present interval 1, so it needs no frame-rate key.

Memory

• nninitStartup hands application pool − used memory to StandardAllocator::Initialize(nullptr, size) as one address region (it returns to main+0x10f7140) and never calls SetMemoryHeapSize, as in the other Unity games with virtual address memory. With the 1 GB pool that region is 0.91 GB at alias +0.06 GB.
• Unity's own allocator (main+0x1b8402c) reserves most of its regions as 4 MB or 2 MB plus 0x3f000 bytes, which the 2 MB region alignment rounds to 6 MB and 4 MB of address space.
• Resolved: an nn::diag abort at sdk+0x13b2b8 (Result 0) on some boots, at the title. The backtrace is nn::os::detail::ThreadManager::CreateThread (sdk+0x135608) → ThreadManagerImplByHorizon::MapAliasStack. StackGuardManager::MapAtRandomAddress (sdk+0x138140) asks AddressSpaceAllocatorBase::AllocateSpace (sdk+0x139070) for a random place for the new stack in the stack region; AllocateSpace tries 512 random addresses and returns 0 when none has the stack and its guard pages free, and MapAliasStack aborts on that (its third outcome; the other, 2, is a failed map that it retries). With DM_THR=1 DM_SVC=1, the game maps 48 stacks into the stack region in its first 30 s, 106 MB in all: 33 of 1 MB and nine of 8 MB. In the 256 MB stack region every other profile uses, the start positions an existing stack rules out for a new 8 MB one add up to more than the region, so the 512 tries find none on some boots. Horizon gives a 39-bit process a 2 GB stack region. A 640 MB stack region, taken from the alias region in the same 5 GB block (an iPhone has no room for a larger block), holds them; see Thread stacks placed at random in the stack region.
• Current: the alias region reached +3.25 GB of its 4 GB in the tutorial island, with at most 1.50 GB mapped; about 2.2 to 2.5 GB resident and 0.8 to 0.9 GB of Metal allocations on the Mac, flat over a 15-minute run. That run mapped 52 stacks, 138 MB in all (13 of 8 MB), into the 640 MB stack region.

Files and shaders

• RomFS: 12,442 files, 3.49 GB; 12,294 UnityFS bundles (1.63 GB), 24 USM movies (1.69 GB) and the CRI ADX banks (.acb / .awb), nearly all under Data/StreamingAssets.
• 59,226 shaders from Data/ and the player's GLSLC outputs in main; all build for the Mac.
• Resolved: a red texture type mismatch line for URP's CopyDepth (a3d53d20b89e6015, at the title: declares slot 128 as Metal type 2, texture … is type 4). The shader reads the multisample depth through texture2d_ms, which the reflection reader recorded as 2D; the binding was right. See Multisample texture slots.

Frame rate

• Current: 60 fps on the Mac (an Apple M6, headless): frame time p50 16.7 ms, p95 19.4 ms on the tutorial island while other builds compiled shaders on the same Mac.

Audio and movies

• CRI ADX sound and FMOD through one six-channel AudioOut.
• The story movies are USM files that CRI Mana decodes on its own threads (CriManaDecodeThread, CRI MPV Worker) into textures the game draws; they play with no host support. A press shows "A Skip"; A then opens "Skip movie?" with No selected.

Mac routes

• Build with scripts/build_ipa_from_nsp.py <NSP folder> -k <prod.keys> --platform mac; its last line runs the game. The picture is a 1280x720 crop of the 1920x1080 window texture (nvnWindowSetCrop): screenshots from DM_CTL / DM_NVN_SHOT need DM_NVN_SHOT_OUT=1280x720 (or the window's size) to show the crop rather than the whole texture.
• From a fresh save, through DM_CTL: A at "Press any Button!" (about 20 s after boot), A (the autosave notice), A ("Creating save data"). The opening movie starts; A, A, Left, A skips it. A (the tilt card) starts the tutorial island: tilt the left stick to roll, the right stick turns the camera, and A goes through the dialogue. The Spin Dash wants B released while the stick is still tilted: B~0.6, B+LUp~0.6, LUp~1 as three lines.

Testing

• 2026-10-30, Mac (headless, no audio), this profile in the worktree: the route above from a fresh save through the opening movie, the tutorial island's rolling and camera steps, the next movie and the Spin Dash lesson, with no red line once the shaders were built.
• 2026-10-30, Mac (headless, no audio), 15 minutes of scripted play on the tutorial island (DM_SVC=1 DM_THR=1): 50,000 frames at 60 fps (p95 20.9 ms), no red line, no crash.
• 2026-10-30, --platform mac from this profile in dm/games: the split checked against these tables with no mismatch; all 59,226 shaders built and stamped, the pipeline prebuild 21 minutes. The first build, from the provisional profile on a Mac shared with other shader builds, took 2 hours (shaders 79 minutes).

Open

• iOS: no IPA built yet; untested on a device.
• Not checked: the story's first world, the battle and multiplayer modes, sound on a Mac with audio out.
• Only update 2.20 is registered. Other versions come from a derived profile.

Found on this game

• Thread stacks placed at random in the stack region: the 640 MB stack region.
• Multisample texture slots: texture2d_ms and depth2d_ms read as their own types, and zero multisample textures for unbound ones.
• An SDK 17.5.8 instance of the SDK's address-region node area, cut by the SDK-wide rule.