Honestly nothing will beat Warcraft 3 (pre ~~reforged~~ refunded) custom games for LAN parties.
Some of my favorite maps: Warlock (any 1.0X version), either teams or FFA, Uther Party, Battle Tanks, Archer Wars Legacy, Survival Chaos, Legion TD, Farmer vs Hunter, Founders of the North, Hungry Hungry Felhounds, The Predator (Version FINAL), etc.
Honestly there's just too many to count and even remember