diff --git a/src/assemble-all.sh b/src/assemble-all.sh
index d89f005..8e11952 100755
--- a/src/assemble-all.sh
+++ b/src/assemble-all.sh
@@ -15,6 +15,7 @@ SCRIPT_DIR=$(dirname "$0")
 "$SCRIPT_DIR/assemble.sh" gambatte-roms
 "$SCRIPT_DIR/assemble.sh" gbmicrotest
 "$SCRIPT_DIR/assemble.sh" little-things-gb
+"$SCRIPT_DIR/assemble.sh" mbc3-tester
 "$SCRIPT_DIR/assemble.sh" mealybug-tearoom-tests
 "$SCRIPT_DIR/assemble.sh" mooneye-test-suite
 "$SCRIPT_DIR/assemble.sh" mooneye-test-suite-wilbertpol
diff --git a/src/assemble.sh b/src/assemble.sh
index e0a4f70..ef8c2a6 100755
--- a/src/assemble.sh
+++ b/src/assemble.sh
@@ -322,6 +322,34 @@ build_little_things_gb()
 }
 
 
+build_mbc3_tester()
+{
+    print_cmd_title
+
+    chmod +x "$ARTIFACTS_DIR/rgbds/"*
+    PATH="$ARTIFACTS_DIR/rgbds:$PATH"
+
+    ARTIFACT_NAME=mbc3-tester
+    ARTIFACT=$(mkdir_artifact $ARTIFACT_NAME)
+
+    REPO=$(mktemp -d)
+    cd "$REPO"
+    git clone https://github.com/EricKirschenmann/MBC3-Tester-gb.git .
+    git checkout 40065adab0e2a5597621bb7e7e4812d0e0f43da7
+
+    cd disassembly
+    make all
+    cd -
+
+    cp disassembly/game.gb "$ARTIFACT/mbc3-tester.gb"
+    cp README.md "$ARTIFACT/mbc3-tester-readme.md"
+
+    cd "$SRC_DIR"
+    cp mbc3-tester-expected/*.png "$ARTIFACT"
+
+    cp "$SRC_DIR/howto/mbc3-tester.md" "$ARTIFACT/game-boy-test-roms-howto.md"
+}
+
 
 build_mealybug_tearoom_tests()
 {
@@ -634,6 +662,7 @@ CMD_DMG_ACID2=dmg-acid2
 CMD_GAMBATTE=gambatte-roms
 CMD_GBMICROTEST=gbmicrotest
 CMD_LITTLE_THINGS_GB=little-things-gb
+CMD_MBC3_TESTER=mbc3-tester
 CMD_MEALYBUG_TEAROOM_TESTS=mealybug-tearoom-tests
 CMD_MOONEYE_TEST_SUITE=mooneye-test-suite
 CMD_MOONEYE_TEST_SUITE_WILBERTPOL=mooneye-test-suite-wilbertpol
@@ -666,6 +695,7 @@ case ${CMD} in
     "${CMD_GAMBATTE}") build_gambatte_hwtests "$@" ;;
     "${CMD_GBMICROTEST}") build_gbmicrotest "$@" ;;
     "${CMD_LITTLE_THINGS_GB}") build_little_things_gb "$@" ;;
+    "${CMD_MBC3_TESTER}") build_mbc3_tester "$@" ;;
     "${CMD_MEALYBUG_TEAROOM_TESTS}") build_mealybug_tearoom_tests "$@" ;;
     "${CMD_MOONEYE_TEST_SUITE}") build_mooneye_test_suite "$@" ;;
     "${CMD_MOONEYE_TEST_SUITE_WILBERTPOL}") build_mooneye_test_suite_wilbertpol "$@" ;;
diff --git a/src/howto/mbc3-tester.md b/src/howto/mbc3-tester.md
new file mode 100644
index 0000000..22f4262
--- /dev/null
+++ b/src/howto/mbc3-tester.md
@@ -0,0 +1,27 @@
+# MBC3 Bank Tester
+
+The [MBC3 Bank Tester](https://github.com/EricKirschenmann/MBC3-Tester-gb)
+is compiled with [RGBDS](https://github.com/gbdev/rgbds).
+
+## Game Boy Devices & SoC Revisions
+
+Untested on real hardware but it should work on all revisions since it tests a cartridge.
+
+## Exit Condition
+
+This tests loops indefinitely. The result can be checked after first 40 frames.
+
+## Test Success/Failure
+
+Test success/failure can be determined by
+[a screenshot](https://github.com/c-sp/gameboy-test-roms/tree/master/src/mbc3-tester-expected/)
+comparison.
+
+To create comparable screenshots,
+your emulator should calculate colors as follows:
+
+- `#000000`, `#555555`, `#AAAAAA` and `#FFFFFF` are used for the four DMG LCD
+  shades
+- LCD shades for CGB compatibility mode are:
+  - background: `#000000`, `#0063C6`, `#7BFF31` and `#FFFFFF`
+  - objects: `#000000`, `#943939`, `#FF8484` and `#FFFFFF`
diff --git a/src/mbc3-tester-expected/mbc3-tester-cgb.jpg b/src/mbc3-tester-expected/mbc3-tester-cgb.jpg
new file mode 100644
index 0000000..1c25c11
Binary files /dev/null and b/src/mbc3-tester-expected/mbc3-tester-cgb.jpg differ
diff --git a/src/mbc3-tester-expected/mbc3-tester-dmg.png b/src/mbc3-tester-expected/mbc3-tester-dmg.png
new file mode 100644
index 0000000..237e1f7
Binary files /dev/null and b/src/mbc3-tester-expected/mbc3-tester-dmg.png differ