static int create_tilemaps_0() {
        top_tilemap[0] = tilemap_create(
                get_top0_tile_info,
                TILEMAP_TRANSPARENT,
                16, 16,
                32, 32
        );

        fg_tilemap[0] = tilemap_create(
                get_fg0_tile_info,
                TILEMAP_TRANSPARENT,
                16, 16,
                32, 32
        );

        bg_tilemap[0] = tilemap_create(
                get_bg0_tile_info,
                TILEMAP_TRANSPARENT,
                16, 16,
                32, 32
        );

        if (top_tilemap[0] != null && fg_tilemap[0] != null && bg_tilemap[0] != null) {
            top_tilemap[0].transparent_pen = 0;
            fg_tilemap[0].transparent_pen = 0;
            bg_tilemap[0].transparent_pen = 0;
            return 0;
        }
        return 1;
    }