The AIs specific to certain expansions (Asia’s Kwaibot, Europe’s PoirBot, India’s Beretonbot, Nordic’s SantaBot, Pennsylvania’s ThomsonBot, Switzerland’s EscherBot) offer the stiffest challenge on their respective maps.
Mobile Gaming eGuide - Tips, Tricks, and Strategies for Today's Hottest Mobile Games Ticket to Ride
The AIs specific to certain expansions (Asia’s Kwaibot, Europe’s PoirBot, India’s Beretonbot, Nordic’s SantaBot, Pennsylvania’s ThomsonBot, Switzerland’s EscherBot) offer the stiffest challenge on their respective maps.