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diff --git a/sdl2/gamecontroller.ha b/sdl2/gamecontroller.ha
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+// TODO: Flesh me out
+
+// The SDL_GameController structure used to identify an SDL game controller.
+// (Opaque)
+export type SDL_GameController = opaque;
+
+// The list of axes available from a controller
+//
+// Thumbstick axis values range from [[SDL_JOYSTICK_AXIS_MIN]] to
+// [[SDL_JOYSTICK_AXIS_MAX]], and are centered within ~8000 of zero, though advanced
+// UI will allow users to set or autodetect the dead zone, which varies between
+// controllers.
+//
+// Trigger axis values range from 0 to [[SDL_JOYSTICK_AXIS_MAX]].
+export type SDL_GameControllerAxis = enum u8 {
+	LEFTX,
+	LEFTY,
+	RIGHTX,
+	RIGHTY,
+	TRIGGERLEFT,
+	TRIGGERRIGHT,
+	INVALID = 255,
+};
+
+// The list of buttons available from a controller
+export type SDL_GameControllerButton = enum u8 {
+	INVALID = 255,
+	A = 0,
+	B,
+	X,
+	Y,
+	BACK,
+	GUIDE,
+	START,
+	LEFTSTICK,
+	RIGHTSTICK,
+	LEFTSHOULDER,
+	RIGHTSHOULDER,
+	DPAD_UP,
+	DPAD_DOWN,
+	DPAD_LEFT,
+	DPAD_RIGHT,
+	MISC1,
+	PADDLE1,
+	PADDLE2,
+	PADDLE3,
+	PADDLE4,
+	TOUCHPAD,
+};
+
+// Check if the given joystick is supported by the game controller interface.
+//
+// 'joystick_index' is the same as the 'device_index' passed to
+// [[joystick_open]].
+//
+// Returns true if the given joystick is supported by the game controller
+// interface, false if it isn't or it's an invalid index.
+export @symbol("SDL_IsGameController") fn SDL_IsGameController(
+	joystick_index: int) bool;
+
+@symbol("SDL_GameControllerOpen") fn _game_controller_open(
+	joystick_index: int) nullable *SDL_GameController;
+
+// Get the SDL_GameController associated with an instance id.
+export fn SDL_GameControllerOpen(
+	joystick_index: int,
+) (*SDL_GameController | error) = {
+	return wrapptr(_game_controller_open(joystick_index))?: *SDL_GameController;
+};
+
+// Close a game controller previously opened with [[game_controller_open]].
+export @symbol("SDL_GameControllerClose") fn SDL_GameControllerClose(
+	gamecontroller: *SDL_GameController) void;
+
+@symbol("SDL_GameControllerRumble") fn _SDL_GameControllerRumble(
+	gamecontroller: *SDL_GameController,
+	low_frequency_rumble: u16,
+	high_frequency_rumble: u16,
+	duration_ms: u32) int;
+
+// Start a rumble effect on a game controller.
+//
+// Each call to this function cancels any previous rumble effect, and calling
+// it with 0 intensity stops any rumbling.
+//
+// The low-frequency motor is generally on the left, and the high-frequency
+// motor is generally on the right.
+export fn SDL_GameControllerRumble(
+	gamecontroller: *SDL_GameController,
+	low_frequency_rumble: u16,
+	high_frequency_rumble: u16,
+	duration_ms: u32,
+) (void | error) = {
+	return wrapvoid(_SDL_GameControllerRumble(
+		gamecontroller,
+		low_frequency_rumble,
+		high_frequency_rumble,
+		duration_ms));
+};