For weeks, he’s been feeding the file into an emulator hooked up to a prototype N64 debug unit. Most attempts crash. But tonight, with a second controller plugged into Port 2, something changes.
But the real killer: memory. The N64’s 4 MB RAM (8 MB with Expansion Pak, which didn’t exist in 1995) couldn’t hold two full level instances. Their solution—instancing enemies and objects only near each player—led to bizarre bugs. In Big Boo’s Haunt , P1 would see a Boo, but P2 would see a floating book. The game’s state desynced so often that Sandra found a function called TRY_FIX_SYNC_LOOP() that literally spun forever. Super Mario 64 Splitscreen Multiplayer -Normal ...
Fan servers host “co-op speedruns”—one player as Mario, one as Luigi, racing to 70 stars without desync. The world record for a full 120-star co-op run is 2 hours, 14 minutes—with 47 desync resets. For weeks, he’s been feeding the file into
Super Mario 64 on original hardware renders about 30,000 triangles per frame at 30 FPS. Splitscreen forces the N64 to render two full scenes—closer to 55,000 triangles. Even with aggressive LOD scaling (Mario becomes a 50-polygon lump from ten meters away), the frame rate dips to 12–18 FPS in levels like Dire, Dire Docks . But the real killer: memory
And every time they reach Cool, Cool Mountain , they still miss the Team Star on the first three tries.