diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e001184
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,21 @@
+*.DAT
+*.dat
+*.NDS
+*.nds
+*.elf
+*.bz2
+*.dsi
+*.cia
+*.zip
+*.exe
+*.dldi
+/*.bin
+/*.dat
+data
+build
+hbmenu
+arm7/build
+arm9/build
+ndsbootloader/arm7/build
+ndsbootloader/arm9/build
+ndsbootloader/*.bin