Mint's Ordnance Operation Demo

The Oomfie Armaments Concern (subsidiary of Castella Heavy Industries) has developed some new weapons, and R&D needs you to test them in a live fire exercise.

Mint will be down in the test chamber armed with a Spearmint rocket launcher to provide some opposition, along with some of her friends.  How long can you last?  More importantly, how much Combat Data™ can you get for the nerds in the lab?

PICO-8 fangame featuring vtubers featuring Henemimi 🐔 (Twitch) and Mint Castella 🐶  (Twitch).

Note for Mint: Volume control is under ⏸Pause menu (Enter) > Options > Volume

Controls

Keyboard + Mouse

ESDF: move forward/back or strafe laterally
Mouse X: turn laterally
Left Click: fire Egg Cracker (shotgun spread)
Right Click: alternate fire (launch bomb)

Controller

While this game is technically playable with controller, it was built for KB+M first.

Arrows: move forward/back, or strafe laterally
Button O / Z: fire Egg Cracker
Button X / X: hold to turn laterally
Button O + X: alternate fire

Thanks

Henemimi & Mint Castella - for inspiring silliness

Bobo Cujo, Furiousrockets, Motoh, SK - for providing feedback on early builds

Version History

2026-01-04 v105 menu tweak - left/right should now work

2025-12-28 v104 shotgun range extended

2025-12-26 v103 oomfies may drop bonus ammo

2025-12-24 v102 fixed (?) front menu to be more mouse-friendly in-browser
- M1 requires a long-press to start new session
- added mouse sensitivity options to front menu
- fixed enemies blocking shots

2025-12-24 v100 release candidate
- 8103/8192

2025-12-07 v011 new enemies, temp map select
- fixed player getting stuck in walls, usually from mashing a corner 
- 6612/8192

2025-11-25 v009 mint is pretty much done
- added menu items (notably turn rate / mouse sensitivity)
- swapped dpad controls
- proper game over state
- 5796/8192

2025-11-16 v008 attempt to fix cursor drift

2025-11-14 v007 initial