diff --git a/LEGO1/omni/include/mxthread.h b/LEGO1/omni/include/mxthread.h
index 8afa4454..ba0d89fa 100644
--- a/LEGO1/omni/include/mxthread.h
+++ b/LEGO1/omni/include/mxthread.h
@@ -5,7 +5,11 @@
 #include "mxsemaphore.h"
 #include "mxtypes.h"
 
+#ifdef PSP
+#include <pspkerneltypes.h>
+#else
 #include <SDL3/SDL_thread.h>
+#endif
 
 class MxCore;
 
@@ -33,9 +37,15 @@ class MxThread {
 	virtual ~MxThread();
 
 private:
+#ifdef PSP
+	static int ThreadProc(SceSize args, void* argp);
+
+	int m_thread;
+#else
 	static int SDLCALL ThreadProc(void* p_thread);
 
 	SDL_Thread* m_thread;
+#endif
 	MxBool m_running;        // 0x0c
 	MxSemaphore m_semaphore; // 0x10
 
diff --git a/LEGO1/omni/src/system/mxthread.cpp b/LEGO1/omni/src/system/mxthread.cpp
index 96e64992..6c118d4d 100644
--- a/LEGO1/omni/src/system/mxthread.cpp
+++ b/LEGO1/omni/src/system/mxthread.cpp
@@ -3,13 +3,20 @@
 #include "decomp.h"
 
 #include <SDL3/SDL_timer.h>
+#ifdef PSP
+#include <pspkernel.h>
+#endif
 
 DECOMP_SIZE_ASSERT(MxThread, 0x1c)
 
 // FUNCTION: LEGO1 0x100bf510
 MxThread::MxThread()
 {
+#ifdef PSP
+	m_thread = 0;
+#else
 	m_thread = NULL;
+#endif
 	m_running = TRUE;
 }
 
@@ -17,7 +24,13 @@ MxThread::MxThread()
 MxThread::~MxThread()
 {
 	if (m_thread) {
+#ifdef PSP
+		sceKernelWaitThreadEnd(m_thread, NULL);
+		sceKernelDeleteThread(m_thread);
+		m_thread = 0;
+#else
 		SDL_WaitThread(m_thread, NULL);
+#endif
 	}
 }
 
@@ -27,6 +40,25 @@ MxResult MxThread::Start(MxS32 p_stackSize, MxS32 p_flag)
 	MxResult result = FAILURE;
 
 	if (m_semaphore.Init(0, 1) == SUCCESS) {
+#ifdef PSP
+		int thid = sceKernelCreateThread(
+			"MxThread",
+			ThreadProc,
+			0x18, // priority (0x18 is typical)
+			p_stackSize * 4,
+			0,
+			NULL
+		);
+
+		if (thid >= 0) {
+			MxThread* self = this;
+			int start = sceKernelStartThread(thid, sizeof(MxThread*), &self);
+			if (start >= 0) {
+				result = SUCCESS;
+				m_thread = thid; // store thread ID if needed
+			}
+		}
+#else
 		const SDL_PropertiesID props = SDL_CreateProperties();
 		SDL_SetPointerProperty(props, SDL_PROP_THREAD_CREATE_ENTRY_FUNCTION_POINTER, (void*) MxThread::ThreadProc);
 		SDL_SetPointerProperty(props, SDL_PROP_THREAD_CREATE_USERDATA_POINTER, this);
@@ -37,6 +69,7 @@ MxResult MxThread::Start(MxS32 p_stackSize, MxS32 p_flag)
 		}
 
 		SDL_DestroyProperties(props);
+#endif
 	}
 
 	return result;
@@ -55,11 +88,19 @@ void MxThread::Terminate()
 	m_semaphore.Wait();
 }
 
+#ifdef PSP
+int MxThread::ThreadProc(SceSize args, void* argp)
+{
+	MxThread* self = *(MxThread**) argp;
+	return self->Run();
+}
+#else
 // FUNCTION: LEGO1 0x100bf680
 int MxThread::ThreadProc(void* p_thread)
 {
 	return static_cast<MxThread*>(p_thread)->Run();
 }
+#endif
 
 // FUNCTION: LEGO1 0x100bf690
 MxResult MxThread::Run()