>>8958995
The card collecting game is actually worth completing if you're an Eva fan.
The visual novel game you're probably thinking of is Iron Maiden, but that was originally a PC game, then ported (and censored) on PS1 and Saturn.
Then there's the very first Eva video game (simply called NGE also known as "First Impression") on Saturn, from 1996, and a sequel called Second Impression that basically makes what >>8959140 says. It introduces new plot elements within the original series, a new character (Mayumi) and new angels.
Iron Maiden also does this but since it was made in Gainax in-house, it's more faithful to the original series, has higher production values and there's no new angels (that would disrupt the original script of the series), instead it focus more on the human drama between Nerv and other paramilitary groups.
Anyway, First and Second Impression for Saturn have some RPG battle elements to them but it's not the best there is, still a neat curiosity. Then Saturn also got ports of the PC mahjong games (Shinji and good friends, with characters from Nadia, Gunbuster, etc).
IMO the best Eva game is the N64 one, it's the one that feels the most like a proper "Eva: the video game", with pick up and play arcade style gameplay and a great faithfulness to the series.