Pengdra Village is pathetically easy. The monsters all hit for no more than triple digit damage and have very low HP and no defense. However, it's not worth spending that many coins on -- not because it's hard to clear, but because farming technical dungeons is a much better way to collect Pengdra if you really need them. Pengdra Village's only advantage is that it can drop the light and dark ones, which don't spawn in any technical dungeons, but if you're really that desperate for the XP, just use off-color Pengdra.
Mega Man: The Light of Will (Mega Man / Green Lantern crossover: In the lead-up to the events of Mega Man 2, Dr. Wily has discovered emotional light technology. How will his creations change how humankind thinks about artificial intelligence? Sadly abandoned. Sufficient Velocity x-post)
Games by Coda (updated 11/24/2019 - New game: Jigsawmino)
Art by Coda (updated 4/20/2020 - untitled original music)