This variation of "Spider" isn't too hard or too easy, allowing moderate ability to maneuver cards.
Two decks of cards
Object: Play all cards to the foundation.
Tableau: 10 piles.
Rank is built down. Cards can be any suit.
If a pile is empty, you can play any card.
You can pick up and play a group of cards in sequence. Cards must match the same suit.
Stock: Holds the 50 undealt cards.
Plays one card face up to each tableau pile.
The stock can not play to the tableau if any piles are empty.
Foundation: 8 piles.
You can only play a fully assembled ace-to-king sequence of cards. Cards must match the same suit.
Difference:
While still using 2 full decks of 104 cards, all cards use one of 2 suits. This makes it much easier to match suits when forming sequences.