Compare Sideral prices across 50+ stores and find the best deal. Developed by Armagedoom Games. Published by Armagedoom Games. Released on 6/21/2019. Available on PC, Mac. Genres: Adventure, Indie.

A wordless, instructionless logic puzzler built by one person across a set of island environments - patient enough to let you figure everything out yourself, rough enough around the edges to test that patience.

I have a soft spot for games that open with silence and zero hand-holding, the kind that trust you to read the room. Sideral leans hard into that philosophy. There are no tutorial pop-ups, no text prompts, no numbered hints. You arrive on the Sideral Islands and the game simply waits, watching you work out what each puzzle even wants from you before you can begin solving it. That first layer - understanding the rules by observation alone - is genuinely the most interesting thing Sideral does, and for a certain kind of player it will feel like exactly the right kind of respect. The puzzles themselves sit in first-person, spread across island environments with an ambient soundscape that players have noted fades in and out - subtle enough to feel intentional, though whether that serves the mood or just reflects a modest production budget is a judgment call you will make yourself. The logic challenges range from approachable to properly knotty, and the variety is real: some puzzles click in thirty seconds, others sit with you uncomfortably until something shifts in your brain. Comparisons to The Witness have floated around the small community that found this game, and that comparison is flattering but honest only in spirit - Sideral is far rougher, far smaller, and far less architecturally ambitious, but the wordless-rules ethos is shared. The cracks show. Community reports flag a save system that does not always register the last completed puzzle on exit, meaning you may redo work you already finished. Controls have no in-game reference, so if you forget a key binding mid-session you are left guessing. These are real friction points for a game built entirely by one person, and they matter in proportion to how deep you get. The developer has been responsive over the years - a 2023 update addressed lighting and invisible maze bugs that had been breaking specific puzzles - which suggests ongoing care, but the rough edges have not all been sanded down. Who is this for? Puzzle fans who like the discovery phase as much as the solving phase, people who find pure logic games a little cold and want a sense of place around the challenge, and players willing to extend patience to a solo-developed project still finding its feet. If you need polish, a clear UI, and a reliable save state, Sideral will frustrate you before it satisfies you. If the idea of sitting quietly with an island and a puzzle that refuses to explain itself sounds like a reasonable evening, there is something here worth uncovering. Kai, Scout Team

Sideral
AdventureIndie

Sideral

Jun 21, 2019Armagedoom Games
GamerScout Says

A wordless, instructionless logic puzzler built by one person across a set of island environments - patient enough to let you figure everything out yourself, rough enough around the edges to test that patience.

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Screenshots & Media

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About Sideral

I have a soft spot for games that open with silence and zero hand-holding, the kind that trust you to read the room. Sideral leans hard into that philosophy. There are no tutorial pop-ups, no text prompts, no numbered hints. You arrive on the Sideral Islands and the game simply waits, watching you work out what each puzzle even wants from you before you can begin solving it. That first layer - understanding the rules by observation alone - is genuinely the most interesting thing Sideral does, and for a certain kind of player it will feel like exactly the right kind of respect. The puzzles themselves sit in first-person, spread across island environments with an ambient soundscape that players have noted fades in and out - subtle enough to feel intentional, though whether that serves the mood or just reflects a modest production budget is a judgment call you will make yourself. The logic challenges range from approachable to properly knotty, and the variety is real: some puzzles click in thirty seconds, others sit with you uncomfortably until something shifts in your brain. Comparisons to The Witness have floated around the small community that found this game, and that comparison is flattering but honest only in spirit - Sideral is far rougher, far smaller, and far less architecturally ambitious, but the wordless-rules ethos is shared. The cracks show. Community reports flag a save system that does not always register the last completed puzzle on exit, meaning you may redo work you already finished. Controls have no in-game reference, so if you forget a key binding mid-session you are left guessing. These are real friction points for a game built entirely by one person, and they matter in proportion to how deep you get. The developer has been responsive over the years - a 2023 update addressed lighting and invisible maze bugs that had been breaking specific puzzles - which suggests ongoing care, but the rough edges have not all been sanded down. Who is this for? Puzzle fans who like the discovery phase as much as the solving phase, people who find pure logic games a little cold and want a sense of place around the challenge, and players willing to extend patience to a solo-developed project still finding its feet. If you need polish, a clear UI, and a reliable save state, Sideral will frustrate you before it satisfies you. If the idea of sitting quietly with an island and a puzzle that refuses to explain itself sounds like a reasonable evening, there is something here worth uncovering. Kai, Scout Team

Tags

singleplayerachievementscontroller-supporttier:sub-5Wordless PuzzlesNo TutorialAtmospheric LogicSolo DeveloperFirst-Person PuzzleObservation-Based

System Requirements

Minimum

OS
Win7 or later
Memory
4 GB RAM
Storage
350 MB available space
Graphics
Intel HD 4000 series
Processor
i3 or higher

Recommended

OS
Win7 or later
Memory
8 MB RAM
Storage
350 MB available space
Graphics
GeForce 780
Processor
i7

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Game Info

Developer
Armagedoom Games
Publisher
Armagedoom Games
Release Date
Jun 21, 2019

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Where can I buy Sideral cheapest?

Compare Sideral prices across every verified store in the price table on this page. We list the cheapest in-stock key and store offers, updated regularly, so you always see the best current deal before you buy.

What platforms is Sideral available on?

Sideral is available on PC, Mac.

When was Sideral released?

Sideral was released on 21 June 2019.

Who developed Sideral?

Sideral was developed by Armagedoom Games.