X is the rarest starting letter. Here are the only notable commercial titles:
| Game | Year | Type | Players | Description |
|---|---|---|---|---|
| X-Wing Miniatures Game (FFG/AMG) | 2012 | Tactical Miniatures | 2 | Star Wars dogfights. Pre-painted ships, maneuver dials, upgrade cards. Living card game (no random packs). Deep competitive scene. |
| XCOM: The Board Game (FFG) | 2015 | Co-op / App-Driven | 1-4 | Real-time app coordinates alien invasion. Players = roles (Commander, Chief Scientist, etc.). Tense, thematic. |
| X-Men: The Card Game (Upper Deck) | 2000 | TCG/CCG | 2 | Vs. System engine. Mutant teams. Out of print. Collectible. |
| XenoShyft: Onslaught (CoolMiniOrNot) | 2014 | Deckbuilding / Tower Defense | 1-4 | Defend base vs waves. Unique "shared hand" mechanic. Hard. Expansions: Dreadmire. |
| Xia: Legends of a Drift System (Far Off Games) | 2015 | Sandbox Space / Pick-up & Deliver | 3-5 | Open world, ship upgrades, missions, trading, combat. Highly rated sandbox. |
| Xylophone (Game) | — | Children's / Music | 1+ | Often a physical xylophone with color-coded song cards. Not a "board game" per se. |
If you're designing one: "X" is a marketing gift — unique, searchable, logo-friendly. Xanadu, Xyloph, Xenith, Xtract... Go claim it.