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Maelstrom is a licensed open source port of the original shareware game for the Macintosh by Ambrosia Software, Inc. It is a fast-action, asteroids-like game, with classic pixel graphics and original sounds.
Linux · May 1, 2026
Worldwide · Exact date · Full release · IGDB
Mac · May 1, 2026
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · May 1, 2026
Worldwide · Exact date · Full release · IGDB
Catalog sources
48 achievements available.

Killed by a small Shenobi ship
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Lots of meteors appear
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Lots of gravity wells appear
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Lots of homing mines appear
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Lots of prizes appear
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Get 0 bonus at the end of a wave
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Get 10K bonus at the end of a wave
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Get 15K bonus at the end of a wave
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Get 20K bonus at the end of a wave
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Get 25K bonus at the end of a wave
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Get 30K bonus at the end of a wave
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Get 5K bonus at the end of a wave
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Run over a damaged ship
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A gravity well appears
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Complete wave 10 starting with 1 life
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Break down all asteroids without destroying them
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Complete an entire wave without shields
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Successfully use your luck prize
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Complete a wave with more hits than misses
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A nova appears
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Complete a wave without firing a shot
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Get the air brakes prize
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Get the exploding prize
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Get the freezing prize
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Get the long range prize
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Get the lucky prize
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Get the machine guns prize
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Get the shields prize
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Get the triple fire prize
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Run out of shields
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Complete a wave without missing a shot
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Destroy a steel asteroid
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Complete a wave using a nova
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Complete 10 waves without dying
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Complete 5 waves without dying
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Complete wave 15 starting with 1 life
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Complete a wave by running into the last asteroid
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Complete the first wave
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Complete Wave 10
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Complete Wave 15
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Complete Wave 20
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Complete Wave 25
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Complete Wave 30
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Complete Wave 35
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Complete Wave 40
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Complete Wave 45
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Complete Wave 5
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Complete Wave 50
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Community notes

Main game