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Cosmic Osmo (floppy version)

Your rating: None Average: 4.8 (29 votes)
Year released:
[www].se [ftp].se [mirror].us [mirror].de
Cosmic_Osmo.SIT (2.97 MB)
MD5: 0c4ecc87c8d1980fe9a45c2cbd229ff5
For System 6.x - Mac OS 9
[www].se [ftp].se [mirror].us [mirror].de
Cosmic_Osmo.img_.7z (2.46 MB)
MD5: a06893a3a78adda29c4fb7726e16a8ff
For System 6.x - Mac OS 9
Guides on emulating older games

Cosmic Osmo was created by brothers Rand and Robyn Miller, who went on to form the company Cyan and develop the best-selling adventure game Myst. It was published in 1989 and won the 1990 Mac User award.

Cosmic Osmo has a style of gameplay similar to Cyan's previous game, The Manhole. There is no goal, no system of scoring points, and nothing that the player can keep in an inventory. A player can be said to have "finished" the game if they've explored every area and found every secret, but the game gives no feedback to indicate whether this has happened. Although this is unconventional, it allows finding new secrets to be a genuine surprise, while avoiding the frustration of endlessly searching the game for the last secret to achieve 100% completion.

In 2007, a new Cosmic Osmo game titled Cosmic Osmo's Hex Isle was released, based loosely on the original's setting but with a more traditional platform game style of gameplay.

This game is also available in CD version. See also Spelunx and the Caves of Mr. Seudo, available in black & white and in color, and The Manhole, also available in black & white and in color.

Architecture: 68k

Requires the HyperCard Player or HyperCard to run.


CalTheOnly's picture
by CalTheOnly - 2014, August 17 - 7:59pm

Loved this game. Not as memorable for me as The Manhole was. These two games are probably a big influence on why I must explore every nook and cranny of every game I play.

anabdesigns's picture
by anabdesigns - 2009, September 8 - 5:56am

Some of my first memories are of Cosmic Osmo, it's been such a pleasure playing it again!

Anonymous's picture
by Anonymous (not verified) - 2009, July 13 - 3:30am

This is a classic children's game. Its the kid's "myst." Gameplay is great and completely open-ended, with numerous planets to explore. This game will take many, many hours for a child to really explore all it has to offer. Even if you don't like it, download it and try to access the music files... the simple jazz soundtrack is excellent.

j_damage•69's picture
by j_damage•69 - 2009, April 17 - 3:02pm

Nice one. I have the CD version, which I may upload sometime.
Thanks for this anyway!

watchsmart's picture
by watchsmart - 2009, April 16 - 3:39am

This one seems to only work well in Mini vMac running System 6. In Basilisk II, the fade effects are so slow as to make the game unplayable.

Loved this game as a kid.