Two-suit spider solitaire played in the dark, hidden cards never turn over by themselves, so you weigh the odds and decide when to gamble on what's underneath.
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How to play
Build columns downward by suit and remove a full King-to-Ace same-suit run; clear all eight runs to win. Unlike ordinary patience, face-down cards stay dark even when exposed at a column's base, they only reveal when you choose to commit one or spend a limited scry peek.
Move a revealed same-suit run with a click on its top card, then a click on the destination column.
Click a dark card to COMMIT it, flipping it sight-unseen, gambling on the odds.
Spend a Scry to safely peek a hidden top card, and use Deal Row to drop a card on every column when none are empty.
The Odds panel tracks how many copies of each card are still unseen, so you can compute the chance a hidden card helps.
Controls
Desktop: click a card or run to select, click a column to move there, click a dark card to commit, and use the toolbar for Scry, Deal Row and Undo.
Phone & tablet: the same taps work on the touch-friendly card table.
Game modes
Daily: one shared seeded deal per day to compare against others.
Practice: deal a fresh random game whenever you like.
Tips & strategy
Check the unseen-card distribution before committing, when most remaining copies help you, the gamble is worth it.
Hoard your scry peeks for high-stakes moments where a wrong flip would strand a column.
Empty a column when you can; any card can move onto an empty space, giving you room to untangle runs.
Origins
Two-suit Spider, with its eight King-to-Ace runs to assemble, and one rule removed.
Face-down cards no longer turn over by themselves. In ordinary Spider, exposing a card at the base of a column reveals it automatically — the game hands you information as a reward for clearing. Here it stays dark until you decide to spend on turning it.
The result is a game about deciding what you are willing not to know. Every move is made against a partially unseen layout, and the question is whether to pay for certainty now or keep building on an assumption — which is closer to how the two-deck game actually feels at the hard end anyway.
About Spider in the Dark
Spider in the Dark is an original hidden-information twist on classic spider solitaire, turning a patience game into a problem of reading the odds. It is a free browser game built in-house for PlayPendium.
A free, original browser game on PlayPendium. No download, no install.
