Arcade coin slot game...do you know where to download?  

I like collecting arcade game ( with the coin slot), plss..help me find this game it's a game when you play as a knight and as usual fight the enemy but you're wearing armour and you can loose your armour one by one if you got hit by your enemy, until you've got no armour and died (daa..) i wanna know what's the title and maybe a place to download it and all the other games