Radium Lux
Lukas Jaeckel · 2025 · Action, Casual, Arcade, Puzzle, 2D Platformer
PC
4 user reviews100% · 4
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About Radium Lux
Radium Lux is a physics-based skill game with puzzle elements. The game design is inspired by and based on the author's hermetic Theory of Everything. This game was an important element in looking at the nature of reality from the perspective of a software developer. The level design is partly based on the three principles of static, organic and chaotic structures. Sometimes the levels change their structure during the game, as if one would skip from one reality to the next.
The sphere that the player has to navigate towards the target is attracted by two tractor beams and gravity. These three forces from different directions allow the sphere to be maneuvered very organically. The aim is to reach the finish line as quickly as possible.
While the game starts out easy, the levels get harder and harder, to the point where one wrong move will immediately send the sphere into spikes and collapse.
130 Level:
The levels are connected in a non-linear way and so it is possible that some levels have alternative endings that unlock alternative levels. Some are easy to find, others may be hidden. The failed attempts and the time spent on each level are counted until the level is completed for the first time in order to calculate a speedrun best time after all levels have been completed.
Replay and Ghost function:
The gameplay of each game is recorded and saved in the event of a personal best time. This means that every best time can be viewed again if required, and it is also possible to see one's own high score as a ghost in order to compete against it in a race. The last time the player failed a level can also be viewed as a replay.
Three player profiles:
The game is actually a single-player game, but there is a separate highscore table for the three save games. The best times of the players can also be shown as ghosts during the game to compete against them and try to beat their best times.
Individual designs:
The design can be set individually, including moving backgrounds that move to match the music, as they function as a kind of visualizer. However, this can lead to performance problems on slower computers, which is why, in addition to the classic standard design and the visualizer, there are also design profiles that are specifically aimed at performance in order to be able to chase the high score without any problems.
The sphere that the player has to navigate towards the target is attracted by two tractor beams and gravity. These three forces from different directions allow the sphere to be maneuvered very organically. The aim is to reach the finish line as quickly as possible.
While the game starts out easy, the levels get harder and harder, to the point where one wrong move will immediately send the sphere into spikes and collapse.
130 Level:
The levels are connected in a non-linear way and so it is possible that some levels have alternative endings that unlock alternative levels. Some are easy to find, others may be hidden. The failed attempts and the time spent on each level are counted until the level is completed for the first time in order to calculate a speedrun best time after all levels have been completed.
Replay and Ghost function:
The gameplay of each game is recorded and saved in the event of a personal best time. This means that every best time can be viewed again if required, and it is also possible to see one's own high score as a ghost in order to compete against it in a race. The last time the player failed a level can also be viewed as a replay.
Three player profiles:
The game is actually a single-player game, but there is a separate highscore table for the three save games. The best times of the players can also be shown as ghosts during the game to compete against them and try to beat their best times.
Individual designs:
The design can be set individually, including moving backgrounds that move to match the music, as they function as a kind of visualizer. However, this can lead to performance problems on slower computers, which is why, in addition to the classic standard design and the visualizer, there are also design profiles that are specifically aimed at performance in order to be able to chase the high score without any problems.
What Steam players say
Recent verbatim reviews from Steam — separate from playze.io community reviews below.
I'll say it again — referring to its predecessors: it's a racing game in disguise; if you pick a 'sphery' fast car from [i]2Fast2Furious[/i], you'll suffer from understeer from time to time, but if you choose to be CAReful, the lack of pressure may cause you to nervously crash — let's not say [i]🟢versteer[/i] — into something sharp, and you will be without tyre pressure as well ... ☢️☢️☢️⁴/💯 — Had confidence in this release already while being 🍀 to test the Alpha release back then ([i]@hrs on record[/i] included) 🟢💡4 found this helpful
Disclaimer: I've amended my previously mixed review to a positive-leaning one, seeing how the developer acted upon some of my critiques (but not all of them). I will not be including my past review on this one though, but my remaining cons remain the soundtrack and the secrets. Overall, I'd say this is quite the challenging speedrunning game with unique controls. The levels are not as demanding with precision as its predecessor, but the time goals as well as the minimal deaths achievement is a fair compromise. I'd say this is now on par with Radium 2 quality, aesthetics, and overall content-wise. If you're on the fence, then waiting for a sale is your best chance of giving this a fair go.4 found this helpful
Radium Lux is an abstract physics-driven arcade puzzle game developed by Lukas Jaeckel and published by Develobster that transforms minimalist mechanics into a surprisingly deep and demanding test of precision, momentum control, and spatial awareness. At first glance, the game appears deceptively simple, presenting players with glowing geometric environments and a floating sphere that must navigate obstacle-filled stages using gravity and dual tractor beams. However, beneath its minimalist presentation lies a highly skill-based experience built around mastering movement physics and adapting to increasingly complex environmental hazards. Rather than focusing on narrative storytelling or traditional adventure progression, Radium Lux dedicates itself almost entirely to mechanical challenge, creating an experience that feels somewhere between a puzzle platformer, a physics sandbox, and an abstract arcade skill game. The most impressive aspect of Radium Lux is its movement system. Players do not directly control the sphere in the same way they would in a standard platformer. Instead, movement depends on manipulating gravitational pull and two opposing tractor beams that influence momen…2 found this helpful
RADIUM^3, let's gooooo1 found this helpful
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