A downloadable NES and Pegasus game

Oh, no! Gaming personality Dark Archon has gotten lost in his labyrinthine cellar again—and it's up to his pet guinea pig, Grunio, to lead the rescue!

Luckily, Grunio’s chew toys have been strewn all throughout the house, the cellar being no exception. So, help this piggie place blocks, swing squeaky hammers, push stools, press switches, collect keys, devour carrots, leap, climb, teeter, tumble, and flop his way through 24 dark, dingy, and drab basement doors.

  • NES ROM: Play it how you want—on an emulator or flash cart of your choice.
  • Two dozen meticulously designed platforming puzzles.
  • Dual-language support: Full game and manual in both English and Polish.
  • Easy passwords to get to later rooms. (or use your emulator's save state feature )
  • Pro Tip: Grab every carrot if you don't want to deal with a hungry cavy!

Łukasz Kur  

Programming & Game Co-Design
Concept (Gameplay & Premise)
Polish Translation
Puzzle Design (Rooms 1–6)


Graphics & Game Co-Design
Illustration & Supplementary Material
Puzzle Design (Rooms 7-24)

    • Gruniozerca 2 - The Great Cavy Rescue! (2018)
  • PDF Manuals
    • English
    • Polish
  • Game Icon (for custom PC shortcuts)
  • Cover Art (for media machines, front ends, etc.)

Grunio's Facebook Page

Youtube Playlist
(Know of more videos? Link me and I'll add them.)

on RetroAchievements.org
(Play with a modern achievement system!)

Gruniożerca 2 - A New Polish Game for NES
[Steemit, Mar. 2018, in Polish]

Gruniożerca 1
(Source and NES ROM from 2016)

Release date Feb 01, 2018
Rated 4.6 out of 5 stars
(5 total ratings)
AuthorsM-Tee, lukaszkur
Tags2D, 8-Bit, Cute, NES (Nintendo Entertainment System), NES ROM, Pixel Art, Puzzle-Platformer
Average sessionAbout an hour
LanguagesEnglish, Polish
InputsKeyboard, Gamepad (any), Joystick, Touchscreen


Gruniozerca 2 - The Great Cavy Rescue!.zip 694 kB
Gruniozerca 2 - Press Assets 436 kB

Install instructions

To play your downloaded titles, use an NES emulator of your choice (we suggest Mesen) or a flash cart such as the Everdrive or PowerPak for your NES, Famicom, Pegasus, Comboy, or AVS.