TriPeaks Solitaire — also called Tri Towers or Triple Peaks — deals 28 cards into three overlapping mountains and challenges you to tear every one of them down. The engine of the game is simple: play any exposed card that sits exactly one rank above or below the current foundation card, in either direction and in any suit. Robert Hogue designed the layout in 1989 after mathematically testing solitaire structures, and the three-peak shape he settled on remains one of the best-balanced boards in solitaire.
This version runs entirely in your browser with none of the mobile-app friction. There are no energy meters rationing your deals, no coin store, no download, and no account wall. Deal, play, and deal again — every hand is free, and your statistics stay on your own device.
The board math is worth knowing before your first click. The 28 cards stack up in rows of 3, 6, 9, and 10: three apex cards, then their supports, then a shared middle layer, and finally an open base row of ten. Eighteen of the 28 start covered, a single card seeds the foundation, and the remaining 23 form your stock. That ratio — 28 cards to clear against only 23 backup draws — is why you cannot draw your way to victory; you have to chain plays.
Every covered card is pinned by exactly two cards from the row beneath it, and both must leave the board before it unlocks. Because the nine-card middle layer is shared between neighboring peaks, work you do at the base of one mountain often loosens cards in the next. Choosing which of the ten base cards to remove first is the real puzzle: two players given the same deal can finish ten cards apart purely on excavation order.
Chains are the currency of TriPeaks. Each card you play without touching the stock extends the current run, and under the traditional streak-scoring convention a run of N cards is worth N(N+1)/2 points — 15 for a 5-card chain, but 55 for a 10-card chain. Even if you only track wins and losses, the same math applies: long chains clear more of the board per stock draw, and stock draws are the scarcest resource you have.
Difficulty changes the rules here, not just the pace. Easy allows King-to-Ace wrapping, so Queen-King-Ace-2 plays as one continuous sequence, and deals every card face-up. Medium keeps the fully open board but removes wrapping, turning Kings and Aces into chain-breaking walls. Hard removes wrapping and deals all 18 covered cards face-down, so you excavate the peaks partly blind. Pick a setting, learn its odds, and start climbing.