How to handle arcade ports

In arcades you are limited by the amount of change in your pocket. When porting arcade games to the home console this limitation no longer exists. So how do you handle continues?

In Ghost Squad you get unlimited continues. The downside with this is that you will beat the game in one sitting. In House of the dead 2 & 3 you only get a limited amount of continuous. This solves this problem but now its so hard that you will probably never be able to finish the game. And seeing how short these games are you will be playing the same first 10-15 minutes over and over again.

It turnes out after playing House of the dead 2 for a while that they actually have an ingenious solution to this. As you play the game you will find hidden items. The further you get and the higher your score is, the better items you get. You cant use those items right then and there. Instead you will have to wait until the next time you play the game, then you can use them. These are items like a bigger magazine for your gun and more continues. You can only use them once so you have to use them wisely. Hopefully you will be able to beat the game with these, if not you will probably be abler to get further and get even better items. Towards the end if you have good enough of a score you can even get an unlimited continue item. If you choose to use it or not is up to you but with it youre guaranteed to beat the game.