The days when you could spend half a day or even a whole day at the arcade with just five game tokens for one yuan make us yearn; those scenes that are still vividly imprinted in our minds make us reminisce. The childhood gaming era, an era of arcade games, has gradually faded away with time.
Back then, even though we were happy, we couldn't find the feeling of "challenging limits"; even though our cooperative teams were powerful, we were always competing against a large "machine." Even when fighting games like "The King of Fighters" and "Street Fighter" introduced human-to-human combat, the downside was that pure fighting games seemed somewhat monotonous, lacking the suspense and excitement of progressing through arcade levels.
It wasn't until the appearance of "合金战纪" (Contra) that "level progression" and "fighting" were truly combined. More importantly, the game provided players with more choices and greater innovation in gameplay.