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Games developed by SOS Software

We provide a list of companies that developed abandonware games. Select a company to view its games. To make searching easier, use pagination by number or letter.

Rockfall

Atari ST 1992
Rockfall is a Boulder Dash clone written in 68000 assembler where in each level (there are a total of 48 levels in the game) you have to collect all the diamonds before the time runs out. Watch out for the boulders because they only stay still on flat surfaces and once they fall you can't outrun them. In later levels monsters and pushers will start to appear. There can be up to 4 of each in a level. Both monsters and pushers must be eliminated one way or another. Monsters walk randomly on the level while pushers always follow the walls and will always turn left if they have to choose the direction. Monsters can be killed using rocks while you need to use traps to kill the pushers. At the beginning of the game you have 180 seconds to complete the first level. For the following levels, you have an extra 120 seconds in addition to what you have left from the previous level. If the timer reaches zero, the game is over.

Rockfall 2: The Perils of Spud

Atari ST 1992
In 1992, the Atari ST received an oddly charming sequel, Rockfall 2: The Perils of Spud, which doubled down on quirky physics and a mischievous tone. Built for the ST’s crisp monochrome and early multicolour tricks, it felt made for quick sessions yet eager for mastery. The premise is straightforward: a stubborn little hero, Spud, must scramble through dangerous cave networks, outwitting hazards that behave less like walls and more like moods. Control is delightfully direct. The protagonist hops, drops, and climbs in a grid of tiles, but every movement is shadowed by gravity, inertia, and the tendency of rocks to keep their own counsel. You steer Spud with a joystick, timing jumps to thread gaps before falling boulders slam down. Enemies and obstacles react to pressure points, turning level navigation into a puzzle of pacing: rush, pause, then surge again. What makes the sequel addictive is its variety inside a familiar skeleton. Rooms introduce new villains, switchable platforms, and crushing ceilings that force constant replanning. Some sections tempt you with escape routes that look open, only to spring traps seconds later. The game rewards rehearsal: memorise where debris originates, learn which alcoves shelter you, and exploit safe rhythms. Difficulty rises through sharper patterns rather than sheer damage, so progress feels earned, not bullied. Visually, the cave walls are rendered with chunky sprites and readable silhouettes, letting you judge distances even when the screen fills with tumble effects. Colour choices are restrained, yet backgrounds stay busy enough to prevent monotony. Sound design leans into crunchy impacts and quick skittering noises, which make each near miss satisfying. When Spud lands perfectly or dodges a collapse, the audio cue lands like punctuation, nudging you to try again immediately. Despite its modest plot, the experience has a personality that carries beyond the final stage. Reviewers at the time praised its control feel and the way it turned falling objects into a readable choreography. It also demonstrated how the ST could host lively action without dragging under heavy effects. Today, fans remember it as a demanding platformer that mixes comedy with lethal geometry, offering a steady challenge for players who enjoy learning systems through experimentation. The manual-style onboarding never overwhelms, yet the game keeps subtle hints buried in level design. Even after repeated attempts, surprises appear, because timing, not reflex alone, decides outcomes. That balance is why the cartridge still feels replayable today too.

Rockfall 3

Atari ST 1995
Rockfall 3 was a highly anticipated game among Atari ST gamers when it was released in 1995. Developed by The Assembly Line and published by Mirage, this action-packed game provided hours of intense gameplay and stunning graphics that were ahead of its time. With its fast-paced gameplay and challenging levels, Rockfall 3 quickly became a fan favorite and cemented its place in gaming history. The game follows the story of a lone adventurer who must navigate through treacherous caves filled with dangerous creatures and obstacles. Players must use their quick reflexes and strategic thinking to avoid falling rocks, slippery surfaces, and deadly enemies. The goal is to collect precious gems and reach the end of each level before time runs out. Each level presents a new and unique challenge, keeping players on their toes and adding to the game's excitement. One of the standout features of Rockfall 3 was its impressive graphics. The Atari ST was not known for its graphic capabilities, but Rockfall 3 managed to push the boundaries and deliver stunning visuals. The caves were beautifully rendered, with attention to detail in every rock and crevice. The sprites of the adventurer and enemies were well-designed, adding to the overall immersive experience of the game. But it wasn't just the graphics that made Rockfall 3 a hit among gamers. The game's soundtrack was equally impressive, featuring catchy tunes that perfectly matched the fast-paced gameplay. The sound effects were also well done, adding to the overall atmosphere of the game. The combination of its graphics and sound made for an immersive gaming experience that kept players coming back for more. Rockfall 3 also offered a variety of power-ups scattered throughout the levels. These power-ups included weapons, extra lives, and speed boosts, which helped players overcome the many challenges they faced. Players had to strategically use these power-ups to their advantage, making the gameplay even more exciting and engaging. In addition to its single-player mode, Rockfall 3 also offered a two-player mode where friends could compete against each other in split-screen action. This added a whole new level of excitement to the game, as players could challenge their friends and see who could reach the end of the level first.

Rockfall Special Edition

Atari ST 1992
Rockfall Special Edition is an enhanced version of the original Rockfall written in 68000 assembler. You control Spud and the object of the game is to collect all the diamonds in each level before time runs out. Watch out for the rocks because they only stay still on flat surfaces and once they fall you can't outrun them. In later levels monsters and pulsators will start to appear. There can be up to 4 of each in a level. Both monsters and pushers must be eliminated one way or another. Monsters walk randomly on the level while pushers always follow the walls and always turn left if they have to choose the direction. Monsters can be killed using rocks while you need to use traps to kill the pushers. After completing a level you will earn a time bonus of 120 seconds which will be added to your remaining time. New in this version is the possibility to continue the game from the level you died in, redrawn graphics and the possibility to use new level sets.
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