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Lifeform Zero

Adult Only · 18+

Lifeform Zero

The game is a pet breeding game. Players need to do things, use the space provided by the agency to cultivate the alien guard house.

Released Feb 22, 2024 Developer Sins of Succubus Publisher Mango Party, Mango Party News Platforms Windows
View on Steam ↗ $3.19 (US · as of 2026-09-25)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-25.

83.4%positive519 reviews
Recommended · 0 found this helpful

“This game is only worth buying when on sale for 50% or higher. This game is very short and barely has a story to follow. The only good thing about this game that is even slightly worth talking about is the s-scenes. The game has many s-scenes and each scene has 3 possible…”

— a player, Steam review · 2 hrs played
Recommended · 0 found this helpful

“Animation are well edited, I hope the Game Dev uses her again, her model is 2 cute to be just used once on a one off game. would buy a crappy FPS game with her or something like that”

— a player, Steam review · 3 hrs played
Not recommended · 4 found this helpful

“It's not really a bad game, but it's also not really worth the listed price so maybe wait till it's on sale. The pet care half of the game is minimal and interactions are extremely limited. The sexual half of the game is better. The VA is good and there are a good amount of…”

— a player, Steam review · 2 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-07 via SteamCharts.

204all-time peak
0 100 200 2025 2026 No data collected for this period No data collected for this period No data collected for this period No data collected for this period No data collected for this period No data collected for this period 99 avg · Feb 2024

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-25.

17achievements
76.7%median completion
10.9%rarest: Worries in the Shadows
99.2% of players 97.5% of players 96.6% of players 94.5% of players 85.2% of players 84.3% of players 80.0% of players 77.9% of players 76.7% of players 75.8% of players 72.8% of players 63.9% of players 61.5% of players 60.5% of players 44.1% of players 33.8% of players 10.9% of players 99.2% 0% most earned rarest
Almost everyone has
99.2%Giant Egg — First look at the egg
97.5%Alien Larvae — Reach the hatchling stage
96.6%Adult Alien — Reach the adult stage
Rarest badges of honor
10.9%Worries in the Shadows — Reach Ending 1
33.8%Full Extraction — Have sex 10 times in one day
44.1%Pass Master — Get the ball from Zero

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Jul 25, 2024
Taiwan Love Story⁵ - An Unforgettable Journey of Romance with Five Charming ladies!

https://clan.akamai.steamstatic.com/images/41075428/4d862846242671374e653cc464a95ab2a9b27633.gif About Game Taiwan Love Story⁵ is an interactive romance novel. While studying abroad, you attend a coha

Jul 12, 2024
NTR Office - Defend your love or choose to be cuckolded, it's all up to you!

https://clan.akamai.steamstatic.com/images/41075428/3e6cebf2d0ef4491e9d70e2a351bab4b4e5fa5c2.gif About Game You work at a poorly managed pharmaceutical company, where your girlfriend is your team lead

Jun 21, 2024
Dead-End City Blues - Infiltrates the city of sin, and defeat comes with a price!

https://clan.akamai.steamstatic.com/images/41075428/6ba067df07b2afc73333a6fb5d0d1adf64e5de48.png About Game 2080, Japan. Neo-Yokohama is a chaotic, violent hellhole. With the police nowhere to be seen

Jun 08, 2024
Countdown to an Amazing Summer: Four Blockbuster Games from Mango Party Coming Soon!

https://clan.akamai.steamstatic.com/images/41075428/e900087d0f43000012fea260117d889dbe90df7f.jpg Summer is just around the corner! Don't go out in the scorching heat, stay home with Mango Party and en

Jun 07, 2024
Latex & Tentacles - Play as the Evil Tentacle, Controlling Slaves and Corrupting the World!

https://clan.akamai.steamstatic.com/images/41075428/8ae3616618254f3861e80eccbb5196305f680df1.png About Game Latex & Tentacles is a tower management and sidescroller game. Play as the forces of evil, a

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-25.

GenresIndie, RPG, Simulation
FeaturesSingle-player · Family Sharing
LanguagesTraditional Chinese, English, Japanese, Simplified Chinese, Korean
Achievements17
Minimum system requirements (PC)

Minimum: OS: Windows 10 Processor: i5 6400 Memory: 8 GB RAM Graphics: gtx 1060