Last updated November 11, 2026.
Short answer: SOURCE replaces the BattleTech map or mat instead of sitting on top of it. Foundation panels are the board, stacked hexes show each elevation level, and line of sight is visible on the table. BattleTech players get a choice: terrain on top of a mat, or the whole board in 3D with SOURCE.
How it works
- The board: lay SOURCE foundations or hexes across the table. You play on the SOURCE hexes in place of a paper map or neoprene mat.
- Elevation: stack one hex for each elevation level. Hills, cliffs and ridgelines are physical, so you read levels at a glance.
- Bases: mech bases fit on one 45mm hex.
- Grid: SOURCE uses its own 45mm grid, larger than official map hexes (about 33mm). Count movement and range in SOURCE hexes.
What to buy
A SOURCE: Starter gives you 282 hex spaces for a full skirmish board. SOURCE: Deluxe gives you 660 for larger battles. Add 24 Hex Packs for more height and SOURCE Adventures boxes for walls and structures.
Works for Alpha Strike too
Alpha Strike plays well on SOURCE for the same reason: real terrain height with fast setup and teardown between games.
Shop SOURCE terrain · See SOURCE Adventures · How SOURCE works
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