Alone. Surrounded by monsters. Armed only with his fists... Time to fight.

Jack Rust was a disillusioned biologist with a PhD—almost. When an extraterrestrial AI calling itself the System invaded Earth and thrust it into a world of aliens, magic, and violence, Jack hoped to at least get some magic himself.

Nope.

Even worse, the System spawned a forest dungeon around him and a goblin in his face....

Armed with nothing but his fists, Jack must grow strong enough to survive hordes of monsters. He needs to return to civilization and find out what the heck is going on. He might even get magic—or not. Surprising himself, Jack discovers that violence is fun.

In this battle-ridden new world, Jack finds the life he always dreamed about. He won’t just survive. He will thrive.

In a world where all magical spells have been captured into cards, those who can build a deck have the most power.

The most Arthur could ever hope for was to someday earn a trash-tier spell card. When fate grants him a legendary Master of Skills card, he's thrust into a world of opportunity and danger.

To survive and grow strong, Arthur must learn skills. All the skills.