Mobile Gaming Guide — Tips, Tricks, and Strategies for Today's Hottest Mobile Games › Ticket to Ride AI Challenge 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. PreviousMind the Gaps NextShort Routes Mean Fast Starts