The deck building and card mechanics aren’t much different from the first game. You collect cards and build a deck with them. This deck is your main arsenal during levels. There are over 500 cards available in the game, and include characters, items, weapons, traps, movement and healing. New to the series are linked cards, which activate automatically once an event takes place. Also new is the ability to “level up” cards, altering the card’s ability (and in turn, your deck). Cards can be leveled up by spending points which are earned by clearing stages. Points can also be used to purchase booster packs between levels, giving you more cards.
During matches, you have control of two characters, Snake and a new character, Venus. Each character has their own deck that can be customized any way you want. You’ll generally want to design each character’s deck to allow them to function independently of one another, though there were a few times that I managed to sneak in a few useful combos between the two. Of course, building your deck around a certain combo isn’t the best option; the odds aren’t in your favor. Like cards, characters can also level up, increasing their health and the number of cards in their deck.
Though it does make a few slight improvements, Metal Gear Ac!d 2 doesn’t alter the first’s formula in any drastic ways. At its core, it is still a turn-based card game with a few minor tweaks to make it more accessible to more players. Still, if you didn’t find the first all that appealing, you will probably want to pass on Metal Gear Ac!d 2 as well. If you liked the first, you’ll like the sequel.