Sanctum is a 1998 online collectible card game and turn-based strategy title developed and published by Digital Addiction. Players assume the role of a mage aligned with one of twelve Houses, each specializing in two of six opposing mana types: Order vs. Strife, Clarity vs. Mystery, and Will vs. World. Matches unfold on a hex-grid battlefield where both players summon minions, capture resource-generating towns, and cast spells drawn from a custom-built deck. The goal is to breach the opponent's Sanctum or force a concession. Games typically last 15–25 minutes and emphasize careful planning over speed, with no real-time elements beyond the turn-based structure. The client was free to download with a starter pack of 60 cards; additional booster packs (15 cards each) could be purchased through a secure online store for $9.99 per set of five. There was no single-player mode or AI opponent, Sanctum was exclusively a live online experience, hosted on Digital Addiction's servers. The service launched in June 1998 and required a Windows 95/98 PC with a 90 MHz Pentium, 16 MB RAM, SVGA graphics, and DirectX 5.0. The game's servers were eventually shut down in the early 2000s, leaving no official way to play. Despite its brief lifespan, Sanctum attracted a dedicated community with its deep tactical interaction, collectible deck-building, and the strategic tension created by random spell draws. Its marriage of card mechanics with positional strategy made it a distinctive entry in the late-1990s online gaming scene.

The Vault · 1998
Sanctum
The thinking player's card game, and one that had me up past midnight.
Windows 95/98Card & Board GameStrategy
Online MultiplayerCollectible Card GameTurn-Based StrategyFantasy
How to Play TodayYour options for running this game in 2026
Original Hardware
Original clients are occasionally found on abandonware sites, but the official servers are long offline. The game cannot be played as originally intended without a custom server solution.
Emulation / Other Options
No functional private server is known, making emulation of the full experience impossible. The client can still be launched for historical interest, but matches cannot be started.
Game Record
| Platform | Windows 95/98 |
| Released | June 9, 1998 |
| Developer | Digital Addiction |
| Publisher | Digital Addiction |
| Genre | Card & Board Game, Strategy |
| Players | 1–2 Players |
Original PC Specs
| OS | Windows 95, Windows 98 (not NT) |
| CPU | Pentium 90 MHz |
| RAM | 16 MB RAM |
| GPU / Display | SVGA (DirectX 5.0 required) |
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