Shadow Era is influenced by several other trading card games, but strives to provide a unique blend that is both easy to learn and fun to play. The basis of the game design behind Shadow Era was to provide a system that avoids mid-turn interrupts that can greatly slow down multiplayer games when played online, while still allowing for deep strategy and surprises.
Shadow Era is shaping up to be a great game, there is a natural tendency to compare it to the top existing trading card games.