Koltera

Creature-collecting idle game built around mining, breeding, and upgrades

Braymen · Released Dec 8, 2023

Adventure Casual Indie RPG Strategy Free To Play

Reviews: Mostly Positive; 72% of 171
Recent reviews: Not enough recent
Playing now: 8; right now
Steam Deck: Playable
Last update: 10 months ago; Nov 19, 2025

What is Koltera?

A free-to-play, single-player creature-collecting idle game. You train and breed creatures, put them to work mining, spend earnings on upgrades, and trade to discover new species. Mining continues to earn resources while you are away.

For you if...

+you enjoy collecting variants and improving creature genetics
+you like idle progress that continues between sessions

Not for you if...

−you want a character-driven story or narrative goals
−you dislike repeated breeding and long resource grinds
−you prefer games that explain their systems clearly

What players say

72% of 171 reviews are positive

Players praise the simple collection and upgrade loop. They complain that pursuing ideal genetics and completing achievements becomes repetitive, and several say the game does little to explain its systems.

Screenshots and trailer

Koltera system requirements

As published by the developer.

Minimum

OS: Windows 10/11
Processor: 2.33GHz or faster x86-compatible processor, or Intel Atom™ 1.6GHz or faster processor for netbook class devices
Memory: 1 GB RAM
Storage: 500 MB available space