diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 000000000..446ba389e
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,52 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container: devkitpro/devkitarm
+    env:
+      GAME_VERSION: FIRERED
+      GAME_REVISION: 0
+      GAME_LANGUAGE: ENGLISH
+      MODERN: 1
+      COMPARE: 0
+      UNUSED_ERROR: 1
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install binutils
+        run: |
+          sudo apt update
+          sudo apt install -y build-essential libpng-dev libelf-dev
+        # build-essential, git, and libpng-dev are already installed
+        # gcc-arm-none-eabi is only needed for the modern build
+        # as an alternative to dkP
+
+      - name: Firered
+        env:
+          GAME_VERSION: FIRERED
+          MODERN: 1
+          COMPARE: 0
+        run: make -j${nproc} -O all
+
+      - name: Leafgreen
+        env:
+          GAME_VERSION: LEAFGREEN
+          MODERN: 1
+          COMPARE: 0
+        run: make -j${nproc} -O all
+
+      - name: Test
+        env:
+          MODERN: 1
+          TEST: 1
+        run: |
+          make -j${nproc} -O pokefirered-test.elf
+          make -j${nproc} check