diff --git a/README.md b/README.md
index c7b5bc9d3..ff7aea70c 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,8 @@ Converter for native execution of PlayStation 5 ELF binaries on Linux through bi
 
 ## Status
 
-Execution reaches `_start`, stack unwinding and exception handling tables are built. All unimplemented stub functions throw std::runtime_error. `what()` is printed to stderr and the process terminates. Now: `sceSystemServiceHideSplashScreen not implemented`
+Execution reaches `_start`, stack unwinding and exception handling tables are built. All unimplemented stub functions throw std::runtime_error. `what()` is printed to stderr and the process terminates.
+Now: `sceUserServiceInitialize not implemented`
 
 ## Disclaimer
 
diff --git a/core/libs/prx/libSceSystemService/Export.cpp b/core/libs/prx/libSceSystemService/Export.cpp
index dfb18df48..43f7f78a1 100644
--- a/core/libs/prx/libSceSystemService/Export.cpp
+++ b/core/libs/prx/libSceSystemService/Export.cpp
@@ -1,7 +1,9 @@
-#include <cstdint>
 #include <cstddef>
+#include <cstdint>
+#include <cstring>
 #include "SceTypes.hpp"
 #include "prx/libc/include/General.hpp"
+#include "prx/libSceSystemService/SystemService.hpp"
 
 extern "C" {
 
@@ -29,21 +31,32 @@ int sceSystemServiceGetNoticeScreenSkipFlag(bool* value) {
 }
 
 int sceSystemServiceGetStatus(SystemServiceStatus* status) {
- (void)status;
- NotImplemented_nid_no_patch(__func__);
- return 0;
+ if (status == nullptr) {
+  return SYSTEM_SERVICE_ERROR_PARAMETER;
+ }
+ *status = SystemServiceStatus{};
+ return SYSTEM_SERVICE_OK;
 }
 
 int sceSystemServiceHideSplashScreen(void) {
- NotImplemented_nid_no_patch(__func__);
- return 0;
+ return SYSTEM_SERVICE_OK;
 }
 
-int sceSystemServiceParamGetInt(int param_id, int* value) {
- (void)param_id;
- (void)value;
- NotImplemented_nid_no_patch(__func__);
- return 0;
+int sceSystemServiceParamGetInt(int paramId, int* value) {
+ if (value == nullptr) {
+  return SYSTEM_SERVICE_ERROR_PARAMETER;
+ }
+ switch (paramId) {
+  case SYSTEM_SERVICE_PARAM_ID_LANG: *value = SYSTEM_SERVICE_PARAM_LANG_ENGLISH_US; break;
+  case SYSTEM_SERVICE_PARAM_ID_DATE_FORMAT: *value = SYSTEM_SERVICE_PARAM_DATE_FORMAT_DDMMYYYY; break;
+  case SYSTEM_SERVICE_PARAM_ID_TIME_FORMAT: *value = SYSTEM_SERVICE_PARAM_TIME_FORMAT_24HOUR; break;
+  case SYSTEM_SERVICE_PARAM_ID_TIME_ZONE: *value = 0; break;
+  case SYSTEM_SERVICE_PARAM_ID_SUMMERTIME: *value = 0; break;
+  case SYSTEM_SERVICE_PARAM_ID_GAME_PARENTAL_LEVEL: *value = SYSTEM_SERVICE_PARAM_GAME_PARENTAL_OFF; break;
+  case SYSTEM_SERVICE_PARAM_ID_ENTER_BUTTON_ASSIGN: *value = SYSTEM_SERVICE_PARAM_ENTER_BUTTON_CROSS; break;
+  default: *value = 0; break;
+ }
+ return SYSTEM_SERVICE_OK;
 }
 
 int sceSystemServiceParamGetString(int param_id, char* buf, size_t buf_size) {
@@ -60,9 +73,12 @@ int sceSystemServicePowerTick(void) {
 }
 
 int sceSystemServiceReceiveEvent(SystemServiceEvent* event) {
- (void)event;
- NotImplemented_nid_no_patch(__func__);
- return 0;
+ if (event == nullptr) {
+  return SYSTEM_SERVICE_ERROR_PARAMETER;
+ }
+ event->event_type = -1;
+ std::memset(event->data, 0, sizeof(event->data));
+ return SYSTEM_SERVICE_ERROR_NO_EVENT;
 }
 
 int sceSystemServiceReportAbnormalTermination(const void* info) {
diff --git a/core/libs/prx/libSceSystemService/SystemService.hpp b/core/libs/prx/libSceSystemService/SystemService.hpp
new file mode 100644
index 000000000..7a2c84a12
--- /dev/null
+++ b/core/libs/prx/libSceSystemService/SystemService.hpp
@@ -0,0 +1,24 @@
+#ifndef CORE_LIBS_PRX_LIBSCESYSTEMSERVICE_SYSTEMSERVICE_HPP
+#define CORE_LIBS_PRX_LIBSCESYSTEMSERVICE_SYSTEMSERVICE_HPP
+
+#include <cstdint>
+
+constexpr int SYSTEM_SERVICE_OK = 0;
+constexpr int SYSTEM_SERVICE_ERROR_PARAMETER = -2136932349;
+constexpr int SYSTEM_SERVICE_ERROR_NO_EVENT = -2136932348;
+
+constexpr int SYSTEM_SERVICE_PARAM_ID_LANG = 1;
+constexpr int SYSTEM_SERVICE_PARAM_ID_DATE_FORMAT = 2;
+constexpr int SYSTEM_SERVICE_PARAM_ID_TIME_FORMAT = 3;
+constexpr int SYSTEM_SERVICE_PARAM_ID_TIME_ZONE = 4;
+constexpr int SYSTEM_SERVICE_PARAM_ID_SUMMERTIME = 5;
+constexpr int SYSTEM_SERVICE_PARAM_ID_GAME_PARENTAL_LEVEL = 7;
+constexpr int SYSTEM_SERVICE_PARAM_ID_ENTER_BUTTON_ASSIGN = 1000;
+
+constexpr int SYSTEM_SERVICE_PARAM_LANG_ENGLISH_US = 1;
+constexpr int SYSTEM_SERVICE_PARAM_DATE_FORMAT_DDMMYYYY = 1;
+constexpr int SYSTEM_SERVICE_PARAM_TIME_FORMAT_24HOUR = 1;
+constexpr int SYSTEM_SERVICE_PARAM_GAME_PARENTAL_OFF = 0;
+constexpr int SYSTEM_SERVICE_PARAM_ENTER_BUTTON_CROSS = 1;
+
+#endif