Lifeless Planet is a 2014 puzzle adventure developed by independent American company Stage 2 Studios and published by Serenity Forge.

While looking for a solution, the Soviet scientists discovered that Aelita, a colonist who had lost both of her children early on in the crisis, had been maintaining a secret garden containing the various plant forms of the planet, among them the now extinct green moss.

One day, she disappeared, later discovered to have fallen off of a cliff and rendered comatose, with a mysterious green moss growing around her toes by the time she was found by the protagonist.

Unlike oxygen replenishing sources, jetpack fuel tanks are usually strategically located beside difficult jumps that require more advanced platforming.

An additional mechanic is a "mobile grabber arm" that is obtained fairly early on in the game, which allows the protagonist to grab objects and solve puzzles which would otherwise be out of reach.

Puzzles in the game are relatively simple, involving: finding and operating a switch to activate a power source; using dynamite to blow away obstacles; rolling and jumping on moveable rocks to access new areas; transporting green moss power sources to outlets; and pressing buttons in a specific order to open a giant gate (the latter two of which usually involve using the aforementioned mobile grabber arm).

The first puzzle of the game involves exploring a small colonist town to find both halves of a passcode that is needed to gain entry into the main Soviet laboratory.

The most common method is falling to death, but the protagonist can also be killed by the planet's mutated plant life (provided he accidentally touches it) or by being incinerated in lava (which is only found in the game's "inferno" level).

[6] Board said that he aimed for the game to convey the "combined sense of optimism and dread of what science was capable of in the hands of humankind".

[11][12][13][14] Adventure Gamers praised the game's creative environmental puzzles, novel concept, great music, and strong atmosphere while criticizing the repetitive gameplay, visuals, flat voice acting, poor controls, and technical issues.

"[17] Game Informer gave it a 7.25 out of 10, writing, "The aspects of Lifeless Planet that succeed elevate it past the technical shortcomings, but only so far.

You will find a compelling world and a story worth experiencing, but you do so at the expense of well-polished animation and gameplay that hinders the overall experience.

[16] PC Gamer and Nintendo World Report liked the music and the narrative but similarly thought unfavorably of the simplistic puzzles, platforming, and static visuals.