What games would you suggest that have LAN support these days?
While PC may be one's first thought here, I'd also be really interested in any mobile games that might leverage one's local wifi network for multiplayer.
Surprisingly, I don’t think Terraria has been mentioned yet. Dedicated server can be downloaded for free and fun on Windows or Linux. I’m relatively sure that even spontaneous hosted games (from inside the game) are LAN accessible directly.