diff --git a/playdate/INSTRUCTIONS.md b/playdate/INSTRUCTIONS.md
new file mode 100644
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--- /dev/null
+++ b/playdate/INSTRUCTIONS.md
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+C project
+  To run in the simulator:
+    cd ./build
+    rm -R ../ThePlaytrix.pdx ./*
+    cmake ..
+    make
+
+  To run on the device:
+    cd ./build-device
+    rm -R ../ThePlaytrix.pdx ./*
+    cmake -DCMAKE_TOOLCHAIN_FILE=${PLAYDATE_SDK_PATH}/C_API/buildsupport/arm.cmake -DCMAKE_BUILD_TYPE=Release ..
+    make
+
+Lua project
+  pdc -s Source ThePlaytrixLua.pdx