A downloadable game for Windows, macOS, and Linux

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New for MS-DOS!

(plus Linux and Windows and Mac)


by Clarissa Toney

Acronia is a 2D run 'n' gun platformer for MS-DOS inspired by action games like Contra, Duke Nukem, and Bio Menace. You play as Allyson Michele "Allie" Connelly, Roslyn Giordano, and Harry Johnson, three employees of a private military contractor and security firm called "Acronia." Behind the scenes, Acronia has been conducting genetic experiments on humans as part of an illicit weapons research and development program. Due to an accident, the facility you work at has been overrun by mutants. Your only goal is to escape, and kill any monsters that try to stop you.

In development

Acronia has been in development since July 2019. Efforts began to ramp up the following January, with the goal of a digital and physical release — on actual floppy disks — some time in 2022. The game runs on real DOS hardware and targets a 386 or better processor with VGA graphics.

This  release of Acronia (still in alpha, with a lot of work left to do) is author Clarissa's entry into DOS Games Spring Jam 2021.  It's still incomplete, with a lot of missing features. Still, we encourage you to try it out and comment here, or follow us on social media.

Be sure to read the documentation (README.TXT, included in the download) for a breakdown of what's missing and what's to come... as well as how to play!

System specifications

Current version: 0.5 alpha | Release date: June 14, 2021

Acronia runs well in DOSBox on any system (Linux/macOS/Windows). If running on real DOS hardware, the system requirements are:


  • Any 32-bit IBM PC compatible (80386 or better)
  • MS-DOS (or compatible operating system) or Windows 95/98
  • 4 MB of RAM
  • VGA graphics capable of 320x200 resolution at 256 colors


  • 486DX2 or better
  • 8 MB of RAM


Hadrosaurus Software
 (development studio)
Clarissa Toney, author

Support us on Patreon!

StatusIn development
PlatformsWindows, macOS, Linux
Rated 4.7 out of 5 stars
(6 total ratings)
AuthorHadrosaurus Software
GenreAction, Platformer
Tags2D, DOS, linux, MS-DOS, Pixel Art, Retro, Singleplayer, windows


Download NowName your own price

Click download now to get access to the following files:

Acronia ver. 0.5 (alpha) (DOS) 1 MB
Acronia ver. 0.5 (alpha) (Linux) 5 MB
Acronia ver. 0.5 (alpha) (Windows) 2 MB
Acronia ver. 0.5 (alpha) (macOS) 5 MB

Development log