15 Hardest PS2 Games of All Time

Gradius 5

Treasure’s last mainline title in the Gradius series also happens to be one of its most challenging. Gradius 5 features many of the same tropes like multitudes of enemies, bullet hell scenarios (especially with bosses) and power-ups. One hit and you lose a life; lose all lives and you have to use a continue. The game demands practice and perfection, challenging you to emerge unscathed through its many rough encounters, even if you swore you dodged that one bullet.