diff --git a/libsuicmez/libsuicmez.h b/libsuicmez/libsuicmez.h
new file mode 100644
index 0000000..ef22ea7
--- /dev/null
+++ b/libsuicmez/libsuicmez.h
@@ -0,0 +1,130 @@
+#ifndef LIBSUICMEZ_H
+#define LIBSUICMEZ_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+// Forward include raylib (or include it in the .c and keep only forward decls)
+#include "raylib.h"
+
+typedef enum suic_log_level {
+  SUIC_LOG_ALL = 0,
+  SUIC_LOG_INFO = 1,
+  SUIC_LOG_WARN = 2,
+  SUIC_LOG_ERROR = 3,
+  SUIC_LOG_NONE = 4
+} suic_log_level;
+
+const char *suic_last_error(void);
+void suic_clear_error(void);
+
+void suic_set_log_level(suic_log_level level);
+
+typedef struct suic_vec2 {
+  float x, y;
+} suic_vec2;
+
+typedef struct suic_vec3 {
+  float x, y, z;
+} suic_vec3;
+
+static inline Vector2 suic_to_rl_vec2(suic_vec2 v) {
+  return (Vector2){v.x, v.y};
+}
+static inline Vector3 suic_to_rl_vec3(suic_vec3 v) {
+  return (Vector3){v.x, v.y, v.z};
+}
+static inline suic_vec2 suic_from_rl_vec2(Vector2 v) {
+  return (suic_vec2){v.x, v.y};
+}
+static inline suic_vec3 suic_from_rl_vec3(Vector3 v) {
+  return (suic_vec3){v.x, v.y, v.z};
+}
+
+// Must be called before any GPU resources (textures, models) are created.
+bool suic_init_window(int width, int height, const char *title);
+void suic_close_window(void);
+
+bool suic_window_should_close(void);
+void suic_set_target_fps(int fps);
+
+// Frame boundaries (2D)
+void suic_begin_drawing(void);
+void suic_end_drawing(void);
+void suic_clear_background(unsigned char r, unsigned char g, unsigned char b,
+                           unsigned char a);
+
+// 3D mode boundaries
+typedef struct suic_camera3d {
+  suic_vec3 position;
+  suic_vec3 target;
+  suic_vec3 up;
+  float fovy;
+  int projection; // map to CameraProjection
+} suic_camera3d;
+
+Camera3D suic_to_rl_camera3d(suic_camera3d cam);
+
+void suic_begin_mode3d(suic_camera3d cam);
+void suic_end_mode3d(void);
+
+bool suic_is_key_down(int key);
+bool suic_is_mouse_button_down(int b);
+suic_vec2 suic_get_mouse_position(void);
+
+typedef struct suic_image_handle {
+  Image value;
+  bool valid;
+} suic_image_handle;
+typedef struct suic_texture_handle {
+  Texture2D value;
+  bool valid;
+} suic_texture_handle;
+
+suic_image_handle suic_image_load(const char *path);
+void suic_image_free(suic_image_handle *img);
+
+suic_texture_handle suic_texture_load(const char *path);
+suic_texture_handle suic_texture_from_image(suic_image_handle img);
+void suic_texture_free(suic_texture_handle *tex);
+
+// Drawing a texture (basic)
+void suic_draw_texture(suic_texture_handle tex, int x, int y, unsigned char r,
+                       unsigned char g, unsigned char b, unsigned char a);
+
+bool suic_audio_init(void);  // wraps InitAudioDevice
+void suic_audio_close(void); // wraps CloseAudioDevice
+
+typedef struct suic_sound_handle {
+  Sound value;
+  bool valid;
+} suic_sound_handle;
+
+suic_sound_handle suic_sound_load(const char *path);
+void suic_sound_play(suic_sound_handle snd);
+void suic_sound_set_volume(suic_sound_handle snd, float volume);
+void suic_sound_free(suic_sound_handle *snd);
+
+typedef struct suic_ray {
+  suic_vec3 origin;
+  suic_vec3 direction;
+} suic_ray;
+
+typedef struct suic_rayhit {
+  bool hit;
+  float distance;
+  suic_vec3 point;
+  suic_vec3 normal;
+} suic_rayhit;
+
+// Ray from camera + mouse
+suic_ray suic_get_mouse_ray(suic_vec2 mouse, suic_camera3d cam);
+
+// AABB ray test (for chunk culling / picking helpers)
+typedef struct suic_aabb {
+  suic_vec3 min;
+  suic_vec3 max;
+} suic_aabb;
+suic_rayhit suic_raycast_aabb(suic_ray ray, suic_aabb box);
+
+#endif // LIBSUICMEZ_H