The easiest way is to rename all map files to MAP00001.[extension], so that the level replaces the first level (Smilesville). Then just start a new game.
There's a bunch of other ways, but this is the simplest option.

How do you play other people's maps? (using keeper95, since I heard there are some bugs that could ruin maps on keeperfx)
The easiest way is to rename all map files to MAP00001.[extension], so that the level replaces the first level (Smilesville). Then just start a new game.
There's a bunch of other ways, but this is the simplest option.
The Awakening
Keeper Animus of Faircoast Skios the Brutal Arachnid Warrior
Realm: Faircoast Cavern
Level: 5
Gold: 0Voro the Warlock Vampire
Realm: Northland Iceland
Level: 4
Gold: 563Ouroboros & Ragnarok, the Bipolar Hellhound
Realm: Faircoast Cavern
Level: 2
Gold: 0Krua the Icy Arachnid Witch
Realm: Faircoast Cavern
Level: 6
Gold: 0Thela the Psycho Mistress
Realm: Northland Iceland
Level: 2
Gold: 0Grey the Trick Archer
Realm: Northland Iceland
Level: 1
Gold: 0

