
Game Overview
A death cult’s contract turns into a strange island siege in this brisk, offbeat first-person shooter. The Calcium Order believes every living thing must eventually fall, yet a serpent-like creature has broken that rule and carved out a fiercely defended mountain refuge. Armed with a scythe and a boat ride into hostile territory, you climb toward its lair through a campaign that channels the speed and aggression of 1990s FPS design without simply copying it. The mood is grim, surreal, and a little playful, with bizarre religious imagery and an arsenal that looks almost familiar before revealing its own twisted logic.
Combat in Calcium Contract rewards momentum, positioning, and learning exactly how each enemy behaves. More than 20 handcrafted stages send you through the island’s rising paths, where every encounter becomes a quick tactical puzzle of target priority, movement, and weapon choice. The Order’s tools cover recognizable shooter roles while behaving in unusual ways, encouraging experimentation rather than reliance on a single favorite gun. A generous rewind feature lets you return to an earlier point in a level, or undo the seconds before a fatal mistake, making hard fights far less frustrating while still leaving the challenge intact.
Its strongest idea is that failure becomes part of the learning process instead of a long trip back to a checkpoint. Enemies can influence one another and disrupt expected combat rhythms, so simply charging ahead like it is Quake or Doom is not always enough. Eternal Harvest expands the package with shifting procedural stages, score chasing, score-boosting curses, online leaderboards, and single-attempt daily challenges. Fans of compact retro shooters who want sharp movement, weird weapons, and a forgiving but demanding mastery loop find plenty to like here, while newcomers benefit from the rewind system’s room to practice.
Screenshots
Installation
- Click the green button below to be redirected to UploadHaven.
- Wait 15 seconds, then hit “Free Download.” (Free downloads may be slower — upgrade to UploadHaven Pro for faster speeds.)
- Once downloaded, right-click the .zip file and choose “Extract to Calcium Contract.” (You’ll need 7-Zip for this.)
- Open the extracted folder and run the game as administrator.
- Enjoy! 🎮 If you see missing DLL errors, check the _Redist folder inside and install what’s needed.
System Requirements
- Requires a 64-bit processor and operating system
- OS: Windows 10 64-bit or later
- Processor: 2.5 GHz
- Memory: 2 GB RAM
- Graphics: Directx 11 support
- DirectX: Version 11
- Storage: 300 MB available space
Setup Guide & Troubleshooting
How do I fix missing DLL errors for Calcium Contract (v1.1.6)?
After extracting Calcium Contract (v1.1.6), navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.
What should I do if the downloaded file is corrupted?
The full archive is 186.87 MB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.
Why should I run the game as administrator?
Right-click the game executable and select "Run as Administrator" to avoid save file issues and permission errors. This is especially important on the first launch.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
This game requires Version 11. Try running in compatibility mode, install the latest DirectX runtime, or install the All-in-One VC Redist Package.
My antivirus is blocking the game — is it safe?
Antivirus false positives are common with pre-installed games. Temporarily pause your antivirus during extraction to prevent it from quarantining game files. You can re-enable it after the extraction completes.