Unlike other games in the series, Metal Slug Advance features a card collection mechanic that serves as the main progression hook.
There is a specific card titled (Card #004) that changes the fundamental gameplay. Metal Slug Advance
There are 100 cards in total. You find them by shooting hidden background elements or rescuing specific hostages. Unlike other games in the series, Metal Slug
In Mission 3, you can find it by shooting the corner of a specific block in the first secret cave area. Unlike other games in the series
This mode makes the game play more like the original arcade titles, where players do not have a health bar.