--- /dev/null
+#ifndef MAIN_MM_H
+#define MAIN_MM_H
+
+/* ========================================================================= */
+/* external functions and definitions imported from main program to game_mm */
+/* ========================================================================= */
+
+#include "../engines.h"
+#include "../conf_gfx.h"
+
+
+/* ========================================================================= */
+/* functions and definitions that are exported from game_mm to main program */
+/* ========================================================================= */
+
+#include "export.h"
+
+
+/* ========================================================================= */
+/* internal functions and definitions that are not exported to main program */
+/* ========================================================================= */
+
+
+/* ------------------------------------------------------------------------- */
+/* constant definitions */
+/* ------------------------------------------------------------------------- */
+
+/* screen sizes and positions for MM engine */
+
+extern int TILESIZE_VAR;
+
+#define TILESIZE 32
+#define TILEX TILESIZE
+#define TILEY TILESIZE
+#define TILEX_VAR TILESIZE_VAR
+#define TILEY_VAR TILESIZE_VAR
+
+extern int SCR_FIELDX, SCR_FIELDY;
+
+#define MAX_BUF_XSIZE SCR_FIELDX
+#define MAX_BUF_YSIZE SCR_FIELDY
+
+/* often used screen positions */
+
+extern int SX, SY;
+
+#define SXSIZE (SCR_FIELDX * TILEX_VAR)
+#define SYSIZE (SCR_FIELDY * TILEY_VAR)
+#define FXSIZE (MAX_BUF_XSIZE * TILEX_VAR)
+#define FYSIZE (MAX_BUF_YSIZE * TILEY_VAR)
+
+extern int REAL_SX, REAL_SY;
+
+#define FULL_SXSIZE (2 + SXSIZE + 2)
+#define FULL_SYSIZE (2 + SYSIZE + 2)
+
+
+/* ------------------------------------------------------------------------- */
+/* data structure definitions */
+/* ------------------------------------------------------------------------- */
+
+/* ------------------------------------------------------------------------- */
+/* exported variables */
+/* ------------------------------------------------------------------------- */
+
+extern struct LevelInfo_MM native_mm_level;
+
+extern Bitmap *bitmap_db_field_mm;
+
+extern int GfxElementLast[MM_MAX_PLAYFIELD_WIDTH][MM_MAX_PLAYFIELD_HEIGHT];
+extern int GfxGraphicLast[MM_MAX_PLAYFIELD_WIDTH][MM_MAX_PLAYFIELD_HEIGHT];
+extern int GfxGraphic[MM_MAX_PLAYFIELD_WIDTH][MM_MAX_PLAYFIELD_HEIGHT];
+extern int GfxFrame[MM_MAX_PLAYFIELD_WIDTH][MM_MAX_PLAYFIELD_HEIGHT];
+
+
+/* ------------------------------------------------------------------------- */
+/* exported functions */
+/* ------------------------------------------------------------------------- */
+
+#endif /* MAIN_MM_H */