Root: The Clockwork Expansion 2

From Leder Games:

The Clockwork Expansion 2 is an expansion that lets you square off against four automated factions. Add one to round out a game with few players, or team up in cooperative play!

Each bot has four difficulty levels and four trait cards, giving them special powers and strategic quirks. Also included is a new Better Bot trait card for each faction from the first Clockwork Expansion.

Compete against four new automated factions!

• Logical Lizards: Tear down their gardens before their swarms of zealous acolytes dig your grave.
• Riverfolk Robots: Trade with them for mercenariesand more to defeat your foes. Their services carry a price, though, so make sure you win before they're strong enough to collect.
• Cogwheel Corvids: Foil their plots and root out their agents, or else they'll press the Woodland to do their will.
• Drillbit Duchy: Hold your ground against the invading hordes and stop their ministers from organizing your defeat.

This is an expansion. It requires the Root board game as well as one or both of The Riverfolk Expansion and The Underworld Expansion.