diff --git a/core/src/avm1/globals/system.rs b/core/src/avm1/globals/system.rs
index c6afe3806..0b16d0e10 100644
--- a/core/src/avm1/globals/system.rs
+++ b/core/src/avm1/globals/system.rs
@@ -9,6 +9,25 @@ use gc_arena::MutationContext;
 use num_enum::TryFromPrimitive;
 use std::convert::TryFrom;
 
+/// Available cpu architectures
+pub enum CpuArchitecture {
+    PowerPC,
+    X86,
+    SPARC,
+    ARM,
+}
+
+impl fmt::Display for CpuArchitecture {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str(match self {
+            CpuArchitecture::PowerPC => "PowerPC",
+            CpuArchitecture::X86 => "x86",
+            CpuArchitecture::SPARC => "SPARC",
+            CpuArchitecture::ARM => "ARM",
+        })
+    }
+}
+
 /// Available type of sandbox for a given SWF
 pub enum SandboxType {
     Remote,
@@ -211,6 +230,11 @@ pub enum SystemCapabilities {
     VideoEncoder,
     Debugger,
     LocalFileRead,
+    Process64Bit,
+    Process32Bit,
+    AcrobatEmbedded,
+    TLS,
+    WindowLess,
 }
 
 /// The properties modified by 'System'
@@ -241,6 +265,10 @@ pub struct SystemProperties {
     pub os: OperatingSystem,
     /// The type of the player sandbox
     pub sandbox_type: SandboxType,
+    /// The cpu architecture of the platform
+    pub cpu_architecture: CpuArchitecture,
+    /// The highest supported h264 decoder level
+    pub idc_level: String,
 }
 
 impl SystemProperties {
@@ -363,6 +391,8 @@ impl Default for SystemProperties {
             manufacturer: Manufacturer::Linux,
             os: OperatingSystem::Linux,
             sandbox_type: SandboxType::LocalTrusted,
+            cpu_architecture: CpuArchitecture::X86,
+            idc_level: "5.1".into(),
         }
     }
 }
diff --git a/core/src/avm1/globals/system_capabilities.rs b/core/src/avm1/globals/system_capabilities.rs
index 51b670aad..8f658dc16 100644
--- a/core/src/avm1/globals/system_capabilities.rs
+++ b/core/src/avm1/globals/system_capabilities.rs
@@ -47,6 +47,10 @@ macro_rules! capabilities_prop {
     }};
 }
 
+capabilities_func!(get_has_64_bit_support, SystemCapabilities::Process64Bit);
+capabilities_func!(get_has_32_bit_support, SystemCapabilities::Process32Bit);
+capabilities_func!(get_is_acrobat_embedded, SystemCapabilities::AcrobatEmbedded);
+capabilities_func!(get_has_tls, SystemCapabilities::TLS);
 capabilities_func!(get_has_accessibility, SystemCapabilities::Accessibility);
 capabilities_func!(get_has_audio, SystemCapabilities::Audio);
 capabilities_func!(get_has_audio_encoder, SystemCapabilities::AudioEncoder);
@@ -69,6 +73,7 @@ inverse_capabilities_func!(
     SystemCapabilities::LocalFileRead
 );
 inverse_capabilities_func!(get_is_av_hardware_disabled, SystemCapabilities::AvHardware);
+inverse_capabilities_func!(get_is_windowless_disabled, SystemCapabilities::WindowLess);
 
 pub fn get_player_type<'gc>(
     _avm: &mut Avm1<'gc>,
@@ -177,6 +182,24 @@ pub fn get_server_string<'gc>(
     Ok(context.system.get_server_string(avm).into())
 }
 
+pub fn get_cpu_architecture<'gc>(
+    _avm: &mut Avm1<'gc>,
+    context: &mut UpdateContext<'_, 'gc, '_>,
+    _this: Object<'gc>,
+    _args: &[Value<'gc>],
+) -> Result<ReturnValue<'gc>, Error> {
+    Ok(context.system.cpu_architecture.to_string().into())
+}
+
+pub fn get_max_idc_level<'gc>(
+    _avm: &mut Avm1<'gc>,
+    context: &mut UpdateContext<'_, 'gc, '_>,
+    _this: Object<'gc>,
+    _args: &[Value<'gc>],
+) -> Result<ReturnValue<'gc>, Error> {
+    Ok(context.system.idc_level.clone().into())
+}
+
 pub fn create<'gc>(
     gc_context: MutationContext<'gc, '_>,
     proto: Option<Object<'gc>>,
@@ -184,6 +207,11 @@ pub fn create<'gc>(
     let capabilities = ScriptObject::object(gc_context, proto);
 
     capabilities_prop!(gc_context, capabilities,
+        "supports64BitProcesses" => get_has_64_bit_support,
+        "supports32BitProcesses" => get_has_32_bit_support,
+        "isEmbeddedInAcrobat" => get_is_acrobat_embedded,
+        "hasTLS" => get_has_tls,
+        "cpuArchitecture" => get_cpu_architecture,
         "hasAccessibility" => get_has_accessibility,
         "hasAudio" => get_has_audio,
         "hasAudioEncoder" => get_has_audio_encoder,
@@ -199,6 +227,7 @@ pub fn create<'gc>(
         "isDebugger" => get_is_debugger,
         "avHardwareDisable" => get_is_av_hardware_disabled,
         "localFileReadDisable" => get_is_local_file_read_disabled,
+        "windowlessDisable" => get_is_windowless_disabled,
         "language" => get_language,
         "manufacturer" => get_manufacturer,
         "os" => get_os_name,
@@ -209,7 +238,8 @@ pub fn create<'gc>(
         "screenResolutionX" => get_screen_resolution_x,
         "screenResolutionY" => get_screen_resolution_y,
         "serverString" => get_server_string,
-        "version" => get_version
+        "version" => get_version,
+        "maxLevelIDC" => get_max_idc_level
     );
 
     capabilities.into()