diff --git a/system/client-functions/InvisibleMag/InvisibleMag.1OEF.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.1OEF.patch.s
new file mode 100644
index 00000000..0fe0ce61
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.1OEF.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1CA49C
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.1OJ2.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.1OJ2.patch.s
new file mode 100644
index 00000000..e27a1ff0
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.1OJ2.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1AADD8
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.1OJ3.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.1OJ3.patch.s
new file mode 100644
index 00000000..13b919c3
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.1OJ3.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1C7408
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.1OJ4.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.1OJ4.patch.s
new file mode 100644
index 00000000..da24bfe5
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.1OJ4.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1C9E9C
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.1OJF.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.1OJF.patch.s
new file mode 100644
index 00000000..dee3724f
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.1OJF.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1C75B4
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.1OPF.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.1OPF.patch.s
new file mode 100644
index 00000000..5ac6f0cf
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.1OPF.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1CA240
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.2OEF.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.2OEF.patch.s
new file mode 100644
index 00000000..c4bc9925
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.2OEF.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1F27E8
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.2OJ5.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.2OJ5.patch.s
new file mode 100644
index 00000000..c4bc9925
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.2OJ5.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1F27E8
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.2OJF.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.2OJF.patch.s
new file mode 100644
index 00000000..eb3047ac
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.2OJF.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1F17F0
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/InvisibleMag/InvisibleMag.2OPF.patch.s b/system/client-functions/InvisibleMag/InvisibleMag.2OPF.patch.s
new file mode 100644
index 00000000..ade77c4c
--- /dev/null
+++ b/system/client-functions/InvisibleMag/InvisibleMag.2OPF.patch.s
@@ -0,0 +1,18 @@
+.meta name="Invisible MAG"
+.meta description="Make MAGs invisible"
+
+entry_ptr:
+reloc0:
+  .offsetof start
+start:
+  .include  WriteCodeBlocksDC
+
+  .align    4
+  .data     0x8C1F2354
+  .data     0x00000004
+  rets
+  nop
+
+  .align    4
+  .data     0x00000000
+  .data     0x00000000
diff --git a/system/client-functions/System/WriteCodeBlocksDC.sh4.inc.s b/system/client-functions/System/WriteCodeBlocksDC.sh4.inc.s
new file mode 100644
index 00000000..9f18c170
--- /dev/null
+++ b/system/client-functions/System/WriteCodeBlocksDC.sh4.inc.s
@@ -0,0 +1,45 @@
+  mova    r0, [first_patch_header]
+  mov     r7, r0     # r7 = read ptr
+  xor     r3, r3
+  dec     r3
+  shl     r3, 2      # r3 = 0xFFFFFFFC (mask for aligning r7)
+apply_patch:
+  add     r7, 3
+  and     r7, r3     # r7 = (r7 + 3) & (~3) (align to 4-byte boundary)
+  mov.l   r4, [r7]+  # r4 = dest addr
+  mov.l   r5, [r7]+
+  add     r5, r4     # r5 = dest end ptr (dest addr + size)
+
+again:
+  cmpeq   r4, r5
+  bt      done       # if (r4 == r5) break
+  mov.b   r0, [r7]+
+  mov.b   [r4], r0   # *(r4) = *(r7++);
+  bs      again      # r4++; continue
+  add     r4, 1
+
+done:
+  rets
+  nop
+
+debug_stop:
+  mov     r2, 0x46
+  shl     r2, 1
+  shl     r2, 8
+  shl     r2, 16
+  mov.l   [r2], r0
+  add     r2, 4
+  mov.l   [r2], r3
+  add     r2, 4
+  mov.l   [r2], r4
+  add     r2, 4
+  mov.l   [r2], r5
+  add     r2, 4
+  mov.l   [r2], r6
+  add     r2, 4
+  mov.l   [r2], r7
+  bs      debug_stop
+  nop
+
+  .align 4
+first_patch_header: