Overview
Mille is a two-player card game requiring two standard 52-card decks. Mille is a rummy game similar to canasta in the respects that if a player picks up cards from the discard pile, the player picks up the entire pile, and the only legal melds are three or more cards of a same rank.
Origins
The two-player rummy game Mille is said to have been devised in Montreal, Québec and from there brought to Toronto in the 1990s. It has since become increasingly popular.
Basic rules
The dealer deals 15 cards to their opponent and themself, then turns over a card from the deck.
On a player's turn, they have two options: pick up the "pack", or draw a card from the deck. If the player has a pair in their hand of the last card discarded, they have the option of picking the pack up. The only exception to this rule is if the up card opened immediately after the deal is a 2. The player can pick it up; they don't have to use it immediately or have a pair of 2's. When picking up the pack, the player must immediately lay the pair in their hand and the last card discarded. For example: The pack is 3-4-5-K-3-7. One player discards a 9. The other player has a pair of 9's in their hand. They can take the 9 from the pack, lay the pair of 9's on the table with the discarded 9, then pick up the 3-4-5-K-3-7 and place in their hand.
From Wikipedia (CC BY-SA 4.0).