The game stars Pablo, a dog who traverses through 2D levels using his grappling hook to deal with platforming and enemies.

Sensing a final attack was imminent, The Inventor made plans to protect the people.

Back at the ship, Pablo tells them what happened, and the Professor says no one knows what the Cosmic Gadgets do, but their power may be so strong it destroys the world.

Grapple Dog was made independently by Joseph Gribbin of Medallion Games.

"[3] Ethan Gach included Grapple Dog in his list of fantastic games that went under the radar for Kotaku.

Gach declared the game as "one of the tightest arcade games of the year" praising swinging mechanics as "tricky but rewarding" and that it had "boss fights occasionally border on greatness when they aren't feeling overly punishing.

"[10] A sequel, Grapple Dogs: Cosmic Canines, released on September 12, 2024, for Windows, Nintendo Switch, and Xbox Series X/S.