diff --git a/bricks/cityhub/mpconfigport.h b/bricks/cityhub/mpconfigport.h
index de99cfcf0..500305855 100644
--- a/bricks/cityhub/mpconfigport.h
+++ b/bricks/cityhub/mpconfigport.h
@@ -18,6 +18,7 @@
 #define PYBRICKS_PY_COMMON_KEYPAD       (0)
 #define PYBRICKS_PY_COMMON_LIGHT_MATRIX (0)
 #define PYBRICKS_PY_COMMON_MOTORS       (1)
+#define PYBRICKS_PY_COMMON_SYSTEM       (1)
 #define PYBRICKS_PY_EXPERIMENTAL        (1)
 #define PYBRICKS_PY_GEOMETRY            (1)
 #define PYBRICKS_PY_HUBS                (1)
diff --git a/bricks/ev3dev/Makefile b/bricks/ev3dev/Makefile
index cdaf1d62a..e83487af6 100644
--- a/bricks/ev3dev/Makefile
+++ b/bricks/ev3dev/Makefile
@@ -247,6 +247,7 @@ PYBRICKS_PYBRICKS_SRC_C = $(addprefix pybricks/,\
 	common/pb_type_lightarray.c \
 	common/pb_type_logger.c \
 	common/pb_type_motor.c \
+	common/pb_type_system.c \
 	experimental/pb_module_experimental.c \
 	ev3devices/pb_module_ev3devices.c \
 	ev3devices/pb_type_ev3devices_colorsensor.c \
diff --git a/bricks/ev3dev/brickconfig.h b/bricks/ev3dev/brickconfig.h
index d19581c52..3612072f4 100644
--- a/bricks/ev3dev/brickconfig.h
+++ b/bricks/ev3dev/brickconfig.h
@@ -17,6 +17,7 @@
 #define PYBRICKS_PY_COMMON_KEYPAD       (1)
 #define PYBRICKS_PY_COMMON_LIGHT_MATRIX (0)
 #define PYBRICKS_PY_COMMON_MOTORS       (1)
+#define PYBRICKS_PY_COMMON_SYSTEM       (1)
 #define PYBRICKS_PY_EV3DEVICES          (1)
 #define PYBRICKS_PY_EXPERIMENTAL        (1)
 #define PYBRICKS_PY_GEOMETRY            (1)
diff --git a/bricks/movehub/mpconfigport.h b/bricks/movehub/mpconfigport.h
index 2b0a95fca..0f2d20d6e 100644
--- a/bricks/movehub/mpconfigport.h
+++ b/bricks/movehub/mpconfigport.h
@@ -18,6 +18,7 @@
 #define PYBRICKS_PY_COMMON_KEYPAD       (0)
 #define PYBRICKS_PY_COMMON_LIGHT_MATRIX (0)
 #define PYBRICKS_PY_COMMON_MOTORS       (1)
+#define PYBRICKS_PY_COMMON_SYSTEM       (1)
 #define PYBRICKS_PY_EXPERIMENTAL        (0)
 #define PYBRICKS_PY_GEOMETRY            (0)
 #define PYBRICKS_PY_HUBS                (1)
diff --git a/bricks/nxt/Makefile b/bricks/nxt/Makefile
index 3f5f4417a..f73df1122 100644
--- a/bricks/nxt/Makefile
+++ b/bricks/nxt/Makefile
@@ -144,6 +144,7 @@ PYBRICKS_PYBRICKS_SRC_C = $(addprefix pybricks/,\
 	common/pb_type_dcmotor.c \
 	common/pb_type_logger.c \
 	common/pb_type_motor.c \
+	common/pb_type_system.c \
 	experimental/pb_module_experimental.c \
 	geometry/pb_module_geometry.c \
 	geometry/pb_type_matrix.c \
diff --git a/bricks/nxt/mpconfigport.h b/bricks/nxt/mpconfigport.h
index 661a17b1d..78f4980e6 100644
--- a/bricks/nxt/mpconfigport.h
+++ b/bricks/nxt/mpconfigport.h
@@ -16,6 +16,7 @@
 #define PYBRICKS_PY_COMMON_KEYPAD       (1)
 #define PYBRICKS_PY_COMMON_LIGHT_MATRIX (0)
 #define PYBRICKS_PY_COMMON_MOTORS       (1)
+#define PYBRICKS_PY_COMMON_SYSTEM       (1)
 #define PYBRICKS_PY_EXPERIMENTAL        (0)
 #define PYBRICKS_PY_GEOMETRY            (0)
 #define PYBRICKS_PY_HUBS                (1)
diff --git a/bricks/primehub/mpconfigport.h b/bricks/primehub/mpconfigport.h
index 177e87e59..d1641fab5 100644
--- a/bricks/primehub/mpconfigport.h
+++ b/bricks/primehub/mpconfigport.h
@@ -19,6 +19,7 @@
 #define PYBRICKS_PY_COMMON_KEYPAD       (1)
 #define PYBRICKS_PY_COMMON_LIGHT_MATRIX (1)
 #define PYBRICKS_PY_COMMON_MOTORS       (1)
+#define PYBRICKS_PY_COMMON_SYSTEM       (1)
 #define PYBRICKS_PY_COMMON_SPEAKER      (1)
 #define PYBRICKS_PY_EXPERIMENTAL        (1)
 #define PYBRICKS_PY_GEOMETRY            (1)
diff --git a/bricks/stm32/stm32.mk b/bricks/stm32/stm32.mk
index 633af7b72..455aa2fc5 100644
--- a/bricks/stm32/stm32.mk
+++ b/bricks/stm32/stm32.mk
@@ -204,6 +204,7 @@ PYBRICKS_PYBRICKS_SRC_C = $(addprefix pybricks/,\
 	common/pb_type_logger.c \
 	common/pb_type_motor.c \
 	common/pb_type_speaker.c \
+	common/pb_type_system.c \
 	experimental/pb_module_experimental.c \
 	geometry/pb_module_geometry.c \
 	geometry/pb_type_matrix.c \
diff --git a/bricks/technichub/mpconfigport.h b/bricks/technichub/mpconfigport.h
index a0fdb3343..a5b996c5c 100644
--- a/bricks/technichub/mpconfigport.h
+++ b/bricks/technichub/mpconfigport.h
@@ -18,6 +18,7 @@
 #define PYBRICKS_PY_COMMON_KEYPAD       (0)
 #define PYBRICKS_PY_COMMON_LIGHT_MATRIX (0)
 #define PYBRICKS_PY_COMMON_MOTORS       (1)
+#define PYBRICKS_PY_COMMON_SYSTEM       (1)
 #define PYBRICKS_PY_EXPERIMENTAL        (1)
 #define PYBRICKS_PY_GEOMETRY            (1)
 #define PYBRICKS_PY_HUBS                (1)
diff --git a/pybricks/common.h b/pybricks/common.h
index 791ba29d4..f25557915 100644
--- a/pybricks/common.h
+++ b/pybricks/common.h
@@ -94,6 +94,13 @@ mp_obj_t pb_type_IMU_obj_new(mp_obj_t top_side_axis, mp_obj_t front_side_axis);
 
 #endif // PYBRICKS_PY_COMMON_IMU
 
+
+#if PYBRICKS_PY_COMMON_SYSTEM
+
+extern const mp_obj_base_t pb_type_System_obj;
+
+#endif // PYBRICKS_PY_COMMON_SYSTEM
+
 #endif // PYBRICKS_PY_COMMON
 
 #endif // PYBRICKS_INCLUDED_PYBRICKS_COMMON_H
diff --git a/pybricks/common/pb_type_system.c b/pybricks/common/pb_type_system.c
new file mode 100644
index 000000000..01376b36c
--- /dev/null
+++ b/pybricks/common/pb_type_system.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2020 The Pybricks Authors
+
+#include "py/mpconfig.h"
+
+#if PYBRICKS_PY_COMMON && PYBRICKS_PY_COMMON_SYSTEM
+
+#include "py/obj.h"
+
+#include <pybricks/common.h>
+
+#include <pybricks/util_pb/pb_error.h>
+
+// pybricks.common.System class object
+typedef struct _pb_type_System_obj_t {
+    mp_obj_base_t base;
+} pb_type_System_obj_t;
+
+// dir(pybricks.common.System)
+STATIC const mp_rom_map_elem_t common_System_locals_dict_table[] = {
+};
+STATIC MP_DEFINE_CONST_DICT(common_System_locals_dict, common_System_locals_dict_table);
+
+// type(pybricks.common.System)
+STATIC const mp_obj_type_t pb_type_System = {
+    { &mp_type_type },
+    .name = MP_QSTR_System,
+    .locals_dict = (mp_obj_dict_t *)&common_System_locals_dict,
+};
+
+// Preinstantiated constant singleton
+const mp_obj_base_t pb_type_System_obj = {
+    &pb_type_System
+};
+
+
+#endif // PYBRICKS_PY_COMMON && PYBRICKS_PY_COMMON_SYSTEM
diff --git a/pybricks/hubs/pb_type_cityhub.c b/pybricks/hubs/pb_type_cityhub.c
index 32e180bc6..7f155029c 100644
--- a/pybricks/hubs/pb_type_cityhub.c
+++ b/pybricks/hubs/pb_type_cityhub.c
@@ -26,6 +26,7 @@ STATIC mp_obj_t hubs_CityHub_make_new(const mp_obj_type_t *type, size_t n_args,
 STATIC const mp_rom_map_elem_t hubs_CityHub_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_battery),     MP_ROM_PTR(&pb_module_battery)    },
     { MP_ROM_QSTR(MP_QSTR_light),       MP_ROM_ATTRIBUTE_OFFSET(hubs_CityHub_obj_t, light) },
+    { MP_ROM_QSTR(MP_QSTR_system),      MP_ROM_PTR(&pb_type_System_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset),       MP_ROM_PTR(&pb_hubs_Hub_reset_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset_reason),MP_ROM_PTR(&pb_hubs_Hub_reset_reason_obj) },
 };
diff --git a/pybricks/hubs/pb_type_ev3brick.c b/pybricks/hubs/pb_type_ev3brick.c
index 326b2674a..7b0e2aac9 100644
--- a/pybricks/hubs/pb_type_ev3brick.c
+++ b/pybricks/hubs/pb_type_ev3brick.c
@@ -52,6 +52,7 @@ STATIC const mp_rom_map_elem_t hubs_EV3Brick_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_light),       MP_ROM_ATTRIBUTE_OFFSET(hubs_EV3Brick_obj_t, light)   },
     { MP_ROM_QSTR(MP_QSTR_screen),      MP_ROM_ATTRIBUTE_OFFSET(hubs_EV3Brick_obj_t, screen)  },
     { MP_ROM_QSTR(MP_QSTR_speaker),     MP_ROM_ATTRIBUTE_OFFSET(hubs_EV3Brick_obj_t, speaker) },
+    { MP_ROM_QSTR(MP_QSTR_system),      MP_ROM_PTR(&pb_type_System_obj)                       },
 };
 STATIC MP_DEFINE_CONST_DICT(hubs_EV3Brick_locals_dict, hubs_EV3Brick_locals_dict_table);
 
diff --git a/pybricks/hubs/pb_type_movehub.c b/pybricks/hubs/pb_type_movehub.c
index 01ec56970..59a539f5c 100644
--- a/pybricks/hubs/pb_type_movehub.c
+++ b/pybricks/hubs/pb_type_movehub.c
@@ -261,8 +261,11 @@ STATIC mp_obj_t hubs_MoveHub_make_new(const mp_obj_type_t *type, size_t n_args,
 
 STATIC const mp_rom_map_elem_t hubs_MoveHub_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_battery),     MP_ROM_PTR(&pb_module_battery)    },
-    { MP_ROM_QSTR(MP_QSTR_imu),         MP_ROM_ATTRIBUTE_OFFSET(hubs_MoveHub_obj_t, imu) },
+    { MP_ROM_QSTR(MP_QSTR_imu),         MP_ROM_ATTRIBUTE_OFFSET(hubs_MoveHub_obj_t, imu)   },
     { MP_ROM_QSTR(MP_QSTR_light),       MP_ROM_ATTRIBUTE_OFFSET(hubs_MoveHub_obj_t, light) },
+    #if PYBRICKS_PY_COMMON_SYSTEM
+    { MP_ROM_QSTR(MP_QSTR_system),      MP_ROM_PTR(&pb_type_System_obj)                    },
+    #endif
     { MP_ROM_QSTR(MP_QSTR_reset),       MP_ROM_PTR(&pb_hubs_Hub_reset_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset_reason),MP_ROM_PTR(&pb_hubs_Hub_reset_reason_obj) },
 };
diff --git a/pybricks/hubs/pb_type_nxtbrick.c b/pybricks/hubs/pb_type_nxtbrick.c
index 0c454ca52..7b923dafa 100644
--- a/pybricks/hubs/pb_type_nxtbrick.c
+++ b/pybricks/hubs/pb_type_nxtbrick.c
@@ -32,6 +32,7 @@ STATIC const mp_rom_map_elem_t hubs_NXTBrick_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_buttons),     MP_ROM_ATTRIBUTE_OFFSET(hubs_NXTBrick_obj_t, buttons) },
     { MP_ROM_QSTR(MP_QSTR_battery),     MP_ROM_PTR(&pb_module_battery)                        },
     { MP_ROM_QSTR(MP_QSTR_reset),       MP_ROM_PTR(&pb_hubs_Hub_reset_obj) },
+    { MP_ROM_QSTR(MP_QSTR_system),      MP_ROM_PTR(&pb_type_System_obj)                       },
 };
 STATIC MP_DEFINE_CONST_DICT(hubs_NXTBrick_locals_dict, hubs_NXTBrick_locals_dict_table);
 
diff --git a/pybricks/hubs/pb_type_primehub.c b/pybricks/hubs/pb_type_primehub.c
index a7b3a9bb8..743bbc8f0 100644
--- a/pybricks/hubs/pb_type_primehub.c
+++ b/pybricks/hubs/pb_type_primehub.c
@@ -59,6 +59,7 @@ STATIC const mp_rom_map_elem_t hubs_PrimeHub_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_imu),         MP_ROM_ATTRIBUTE_OFFSET(hubs_PrimeHub_obj_t, imu)     },
     { MP_ROM_QSTR(MP_QSTR_light),       MP_ROM_ATTRIBUTE_OFFSET(hubs_PrimeHub_obj_t, light)   },
     { MP_ROM_QSTR(MP_QSTR_speaker),     MP_ROM_ATTRIBUTE_OFFSET(hubs_PrimeHub_obj_t, speaker) },
+    { MP_ROM_QSTR(MP_QSTR_system),      MP_ROM_PTR(&pb_type_System_obj)                       },
     { MP_ROM_QSTR(MP_QSTR_reset),       MP_ROM_PTR(&pb_hubs_Hub_reset_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset_reason),MP_ROM_PTR(&pb_hubs_Hub_reset_reason_obj) },
 };
diff --git a/pybricks/hubs/pb_type_technichub.c b/pybricks/hubs/pb_type_technichub.c
index bf4caa04f..c88d0fa24 100644
--- a/pybricks/hubs/pb_type_technichub.c
+++ b/pybricks/hubs/pb_type_technichub.c
@@ -36,6 +36,7 @@ STATIC const mp_rom_map_elem_t hubs_TechnicHub_locals_dict_table[] = {
     { MP_ROM_QSTR(MP_QSTR_battery),     MP_ROM_PTR(&pb_module_battery)    },
     { MP_ROM_QSTR(MP_QSTR_imu),         MP_ROM_ATTRIBUTE_OFFSET(hubs_TechnicHub_obj_t, imu)   },
     { MP_ROM_QSTR(MP_QSTR_light),       MP_ROM_ATTRIBUTE_OFFSET(hubs_TechnicHub_obj_t, light) },
+    { MP_ROM_QSTR(MP_QSTR_system),      MP_ROM_PTR(&pb_type_System_obj)                       },
     { MP_ROM_QSTR(MP_QSTR_reset),       MP_ROM_PTR(&pb_hubs_Hub_reset_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset_reason),MP_ROM_PTR(&pb_hubs_Hub_reset_reason_obj) },
 };