The 3rd game of the series actually plays like A Link to the Past, but with platforming segments each time you enter a temple, or forest, etc. Goemon 2 plays like a refined version of the 1st game, but this time there's a Super Mario World style world map making the game feel more like an adventure. Most people are familiar with the first game of the series, Legend of the Mystical Ninja, and while the game is pretty good, the sequels (specially Goemon 2) are one of the finest and prettiest 2D games Konami has ever produced.
Patches for Ganbare Goemon 4 and Soreyuke Ebisumaru Karakuri (a puzzle game) will also come out in the near future.
The translation of the text and dozens upon dozens of graphics, signs, logos, and more looks so professional, you'd think Konami themselves made a modern translation of the game.
After decades of translation attempts by many hackers, and no one being able to figure out the compression Konami used for this series, DDSTranslations has finally released translation patches for Ganbare Goemon 2 and Ganbare Goemon 3.