If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The ancientand Cools Castle was occupied by a group of evil robots, Ultraman has now been sent to guard the ancient castle, now let's follow the Ultraman to get rid of the evil robots those are good at melee attacks
Space key: aiming
Left mouse button: Shoot
Key A: Hide
Key S: Stand