
Ruby and the Lost Crystals is a calm third-person puzzle adventure where you swap between two characters to solve puzzles. Use physical interactions, magical projectiles, and object-swapping to unlock paths, reflect lasers, activate platforms, break obstacles, and explore ancient ruins.
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About
Ruby and the Lost Crystals is a calm third-person puzzle adventure where you swap between two characters with unique abilities to solve magical puzzles, activate mechanisms, and explore the ruins of a forgotten civilisation.

You control:
Ruby, a young girl who can physically interact with the environment: push blocks, turn capstan, activate pressure plate and jump.
Sapphire, a magical stone fairy who shoots projectiles to illuminate crystals, activate platforms, and swap the positions of objects.
Switch between the two to solve puzzles combining logic, spatial reasoning, timing, and magical interactions.
Each area introduces new mechanics, combined in creative ways as the game progresses:
Illuminate lost crystals
Redirect and combine coloured lasers.
Teleport objects to create paths and platforms
Move blocks and platforms to reach new areas
Interact with pressure plates, rotatable structures, or long-range triggers
The puzzles are handcrafted to challenge your thinking without ever overwhelming, encouraging experimentation and observation.

This peaceful third-person puzzle adventure invites players to explore two handcrafted zones filled with ancient ruins, magical devices, and hidden secrets. Through a blend of light dialogue, stylised visuals, and an evolving original soundtrack, the game offers a calm and focused solo experience built around thoughtful interactions and the cooperation between two unique characters.
Genres
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Languages: English
Engagement
Reviews
Themes across 40 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
Interesting puzzle mechanics in a game which ends just as it starts to explore the more complex possibilities. The game is incomplete and I would love to see where it goes from here. Would be nice if it had a 'Save' feature but as it stands, the game isn't long enough to truly warrant one. I managed to soft-lock myself with a little pit right near the beginning while trying to get around the first gate, so might be worth while to make sure invisible barriers are in place to stop that from happening. Overall, seems interesting and the story also seems to have potential, curious to see where it goes from here.
I like the art style, and the puzzles are enjoyable and relaxing. I do recommend this game. Technical notes: Steam Deck compatibility is listed as "unknown", and I don't have one. But it ran well on my Ubuntu desktop with an i7-8700 and GTX1650. On my Tiger Lake notebook (1115G4, with a "hafl CU count" GPU) it runs but gets about 7FPS. This computer is a fair bit slower than a Steam Deck. I would conclude it'll run on the Steam Deck but I'm uncertain if it'd hit 30FPS on it.
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Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 40 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
the game made more fun than any game i ve played in 2025
Achetez une patate, s'il vous plaît. Le jeu tourne à 30FPS alors que j'ai une i7-11gen, RTX 3070 et 16Go RAM! Sinon superbe jeu, déçu que ce ne soit qu'une démo. PS : patate = PC de très basse qualité pour optimiser le jeu. S'il tourne sur une patate, il tourne partout.
666
[h2] My Review for [i]Ruby & The Lost Crystal[/i] - Positive (Prototype Impressions) [/h2] Overall, this game is solid and playable, with a charming vibe that makes it enjoyable from start to finish. I'd definitely recommend it, especially if you're into relaxing puzzle adventures—it's got real potential! [h4][b]* Pros:[/b][/h4] - [i]Graphics:[/i] Really solid and adorable; I absolutely love the art style—it's cute and fits the theme perfectly. - [i]Performance:[/i] Stable overall; it ran fine all the way through without major issues. - [i]Gameplay:[/i] The object interaction mechanics are pretty interesting, and the puzzles strike a great balance—not too easy, not too hard. - [i]BGM:[/i] Excellent; it creates a relaxing yet engaging atmosphere that's super chill for puzzle-solving. - [i]Story:[/i] Can't fully judge it yet since this is just a prototype, but it seems promising so far. [h4][b]* Cons & Suggestions for Improvement:[/b][/h4] - No settings menu or save feature right now—if you exit and come back, you have to start over. Adding these would be a huge plus. - Experienced some unexpected FPS drops in certain sections. - Could use an [i]'Auto'[/i] mode for dialogue segments to make them flow better without constant inputs. All in all, even in prototype form, it's a fun, recommendable experience.
Ruby and the Lost Crystals is a free but unfinished game set in a very attractively designed and coloured 3D world. The main character Ruby and her alien partner Sapphire can jointly activate remote switches and exchange items to reroute light beams, open doorways, activate elevators etc. The mechanics reminded me of a mixture of Portal and The Talos Principle, including "screens" that stop Ruby and Sapphire targeting objects outside their immediate area. The game story is to locate and activate four large crystals to power up an intergalactic "gate", but this prototype suddenly announces that it has ended after the second crystal is powered up (to be fair, there are quite a few nice puzzles to solve to reach this point). There is a sub-plot to find and activate 10 statue heads but, again, there only appear to be seven by the time that the game halts. Note that doesn't appear to be any kind of "save" feature - stopping the game then restarting loses all progress. I enjoyed playing Ruby and the Lost Crystals while it lasted - my play time represents two playthroughs - and It is a shame that this game, with its good artistic design and neat puzzles, appears to have no development future.
免费 没中文 没成就 露比与失落水晶 《露比与失落水晶》是一款轻松舒缓的第三人称解谜冒险游戏。玩家可以在两名能力迥异的角色之间自由切换,破解魔法谜题,启动机关,探索失落文明的遗迹。 🎮 单人冒险,双角色玩法 可操控两名角色: 露比,一名少女,能够与场景进行实体互动:推动方块、转动绞盘、踩踏压力板以及跳跃。 蓝宝石,一名晶石精灵,可以发射魔法弹点亮水晶、激活平台,还能互换物体位置。 灵活切换两名角色,破解融合逻辑、空间推理、时机把控与魔法互动的各类谜题。 🧠 丰富多变的递进式解谜机制 每一片区域都会解锁全新玩法,并且随着游戏进程产生多样组合: 唤醒沉睡的水晶 折射并组合彩色激光 传送物体来搭建道路与平台 移动方块与平台,开辟新的前进路线 操作压力板、旋转机关与远程触发器 所有谜题均为精心手工设计,考验脑力却不会带来挫败感,鼓励玩家不断尝试与细心观察。 这款氛围宁静的第三人称解谜冒险包含两大精心打造的场景,到处都是古老遗迹、魔法装置与隐秘彩蛋。简洁的剧情对话、独特的美术画面,搭配循序渐进的原创配乐,为玩家带来沉静专注的单人游玩体验,依靠缜密操作与两名角色的默契协作完成冒险。
No where did it tell me that this wasn't a full game. The game play that is there was mostly acceptable, but there was one puzzle that when I took a step, it became impossible and I had to start the entire game over. It wasn't terrible because it was near the beginning, but later they set up checkpoints. I enjoyed what I was able to do, but I don't like feeling trapped with non completion. Add on to that, why are we even doing this? Is the end goal even what we need to do? If going back to the beginning was an option, why wasn't it done in the past? Was the nap too powerful? Lastly, the game play video steam has gives hints to several of the puzzles. If you choose to play this, there are several good things about the game. The puzzles are fun, the pace is relaxing. Part of my reason for not recommending it, is because of how it messes with my head. One of the biggest things I object to, is there are conversations that start upon reaching certain areas, and they go by extremely quickly. I read somewhat slowly, so I can't read the entire sentence before it goes away. Also, I feel like the story is empty, thrown together to try to say there even is a story.
Gerat fun game. Finished the game. Full gmae takes approximately 1.5 hours. If you haven't played Ruby and The Lost Crystals give it a go. Just be aware there is no save or auto save so you have to finish it in one sitting or through the day. It took me 1.5 hours. If you did it rigjt you should smash the LAST BIG CRYSTAL at the end and they tell you theres 3 more but then up pops an on screen message saying you have restoredt he crystals thanks for playing. the game does continue on after that but there's nothing to do after that unless you want to explore, but therei's nothing to colelct and no achievements so not worth continue playing after end game. Nice graphics though. Acceptable run speed,. Challenging laser puzzles. Laser puzzles go from easy to medium difficulty with rotating levers and using special skills to change the colours and using mirrors (later on) to rebound shots. 8/10 final rating.
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