The E-Card series starts with Expedition Base Set in September 2002 (165 cards), then Best of game in December 2002 (9 cards), Aquapolis in January 2003 and Skyridge in May 2003. Aquapolis and Skyridge are the two to read carefully: Aquapolis prints a set size of 147 but lists 186 cards, and Skyridge prints 144 but lists 182. The cards past the printed number are the secret rares, so a full checklist is longer than the set size.
E-Card sets by release date
| Set | Released | Numbered cards | Secret rares |
|---|---|---|---|
 Expedition Base Set | Sep 2002 | 165 | — |
| Best of game | Dec 2002 | 9 | — |
 Aquapolis | Jan 2003 | 147 | 39 |
 Skyridge | May 2003 | 144 | 38 |