static GAMEVARIABLE_OPTION gamevariable_options[] =
{
	{ "play_count",		RO_INT,		offsetof(game_variables_type, play_count),				NULL,				(const void *) 0},
	{ "play_time",		RO_INT, 	offsetof(game_variables_type, play_time),				NULL,				(const void *) 0},
	{ "rom_audit",		RO_INT,		offsetof(game_variables_type, rom_audit_results),		NULL,				(const void *) UNKNOWN },
	{ "samples_audit",	RO_INT,		offsetof(game_variables_type, samples_audit_results),	DriverUsesSamples,	(const void *) UNKNOWN },
#ifdef MESS
	{ "extra_software",	RO_STRING,	offsetof(game_variables_type, mess.extra_software_paths),	NULL,				(const void *) "" }
#endif
};

と

void GetTextPlayTime(int driver_index,char *buf)
{
	int hour, minute, second;
	int temp = game_variables[driver_index].play_time;

	assert(0 <= driver_index && driver_index < num_games);

	hour = temp / 3600;
	temp = temp - 3600*hour;
	minute = temp / 60; //Calc Minutes
	second = temp - 60*minute;

	if (hour == 0)
		sprintf(buf, "%d:%02d", minute, second );
	else
		sprintf(buf, "%d:%02d:%02d", hour, minute, second );
}