Challenger[a] is an action-platform video game developed and published by Hudson Soft for the Famicom in 1985.

The setting of the character as an archaeologist is an homage to the Indiana Jones franchise, while his name may be an allusion to Conan Doyle's Professor Challenger (best known for his appearance in The Lost World).

The background music for this level is an arranged version of the well-known military march by Franz Schubert.

Falling off of very high places or getting caught in traps also results in a loss, and the player is taken to the game over screen when there are no lives remaining.

The villain, Don Waldorado, has abducted Princess Maria, and is escaping on a special express train.

The challenger arrives at Waldorado island in search of the princess, and ventures through an extensive 4-directional scrolling game map.

Entering certain caves or buildings allows the player to advance to the third and fourth levels, but others may be dangerous trap zones which can cause instant death.

The level takes place in the inside of a cave, where Challenger must use the gushing fountains of water as steps to cross over to the other side.

Challenger arrives at the pyramid after collecting the three key items, and must jump across several dinosaur-shaped rocks to reach the top floor, where he will face Don Waldorado in the final battle.