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Red Algorithm

Screenshots

Red Algorithm screenshot 1

Red Algorithm

Evgenii Andreev · Published by Evgenii Andreev · Official site ↗

Content notice: The game includes killing of monsters; such as demons, spiders, imps, etc. There is a moderate amount of blood on the screen and monster corpses. Also, rare references to smoking and drinking are present. There is nothing sexual in the game.

Mostly Positive — 77% positive (78 reviews) · 70 achievements

Last updated 27 Sept 2026

Can you survive alone against hundreds of monsters? It's not easy. Try out Red Algorithm, a simple yet intense 2D top-down shooter with RPG elements. Pick up weapons, upgrade them, get new perks, and use powerful bonuses. Try out several different heroes against dangerous evil creatures.

Free to PlayDJCTQ 147 DLC available ↗

Free

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Action, Indie, RPG, Free To Play, Casual · 2021 · More free games

Experience intense action as you face off against hordes of monsters in Red Algorithm. Choose from various heroes, each with unique perks, to survive the dangerous world.

About this game

Gameplay

It's quite simple. Pick a hero, pick a weapon, and fight the monsters! Level up and choose new perks to become stronger and kill monsters even faster. Look for bonuses on the map and try to survive as long as you can.

Features

  • 100+ perks

  • 9 weapons classes

  • 70+ weapons

  • 10+ weapon upgrades

  • 5 types of consumables

  • 10 heroes

  • 15 monsters

  • 7 possible injuries

  • 7 bionic body parts

  • 13 stats to improve with runes

  • 10 skills to train

  • 50+ achievements

  • Stats

Perks

The RPG system here is not complicated; you get one new perk every new level.

There are many of them, you pick 1 out of random 3 in most cases. Many perks have side-effects that can ruin the whole game if picked for the wrong weapon/hero/build. Some perks are very specific and will benefit you only in a particular situation or with a particular setup. This RPG system is simple, yet it provides a lot of freedom in character building. You can make a tanky man, a fast woman with high DPS, a hero that relies on splash, or try to create a balanced character that is good for every situation.

Weapons

You can find a weapon box every few minutes and choose a weapon out of 3 offered randomly. There are many different weapons to choose from.

Unlike in many other games, here you can pick and attempt to use any weapon, but if a weapon's level is higher than the current hero level, you will be penalized. So, try to use weapons which level is suitable for your at the moment, and don't switch them too often, as you will lose gained habit.

A weapon can belong to 1 of 9 general classes:

  • Pistols

  • Shotguns

  • SMGs

  • Rifles

  • ARs

  • Plasma

  • MGs

  • Gauss

  • Primitive

There are some weapons that belong to more than one class.

If you are lucky, you can find a weapon upgrade and pick 1 of 3 random improvements for your gun (more damage, range, faster reload, etc.).

Monsters

You will face 15 monsters on your journey, with a new type every 2 minutes. Monsters appear out of nowhere, and they are also created by spawners, which you should destroy as soon as possible if you don't want to be overwhelmed. Each monster in the game is unique and has different damage resistance. Some are fast, some are healthy, some can shoot, etc.

Heroes

Choose 1 of 10 heroes, each with a unique bonus, starting perk, weapon, and a set of consumables (drones, grenades, turrets, first aid kits, and barricades).

There are 5 free and 5 premium heroes that you can unlock by purchasing DLCs. Premium heroes are the only non-free feature in the game, and they are not stronger than free heroes. By purchasing a DLC you help to support the game, which was created and is managed by just one indie developer.

Long-term progression: Runes and Skills

In addition to the levelling up in a particular game, gaining weapon habit, etc., there are also systems of long-term progression that will improve a particular hero forever for every game you play. It can be done with runes and with skills. Runes can be found during the game and after you can invest them to improve one of many stats (damage, range, move speed, and others). Skills are trained automatically when you are using a particular weapon class (like rifles, pistols, etc.). As you play the game more, your hero becomes stronger, and later you'll be ready to try yourself in Hard Mode.

Steam Leaderboards

Red Algorithm is a single-player game, but it's also a competitive and hard game. That is why there are Steam Leaderboards with the best results players achieved. It's not all about luck, it's also about your skill and game knowledge. Try to climb to the top of one of the Leaderboards and to survive as long as you can, but note that you will be competing with the best there is.

This is NOT an idle game

Despite the game's simple look and general expectations from the top-down shooter genre, Red Algorithm is not exactly what you might have thought it is. It is not an easy game where you can just sit back, relax, and enjoy your stress-free time without any thinking. Your weapon is going to malfunction and force you to reload. It'll be hard to hit monsters and aim. Even if you aimed perfectly, a monster can still dodge your shot. Wind is going to influence your projectiles, making it even harder to hit with certain weapons. The pause function is limited and not available when you choose weapons, perks, etc. and in Hard Mode. RNG will give you many surprises. You will see bad and useless perks offered to you. Not every cool-looking weapon will make you stronger, often it's going to make you weaker as you are not ready to use it yet. There are more than 10 ways to die in this game, and not just 1 from monsters. You will see things that are confusing at first, which might require you to read guides on the Steam community to understand game mechanics deeper. Playing in Hard Mode and doing achievements is even harder. You don't get achievements just by doing something X times, you have to really earn each one of them. To be good in this game you have to think almost constantly, and your decisions matter.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS: Windows 10
  • Processor: 1 Ghz
  • Memory: 512 MB RAM
  • DirectX: Version 8.1
  • Storage: 45 MB available space

Supported Languages

English, Russian

Latest news

  • AnnouncementsOfficial

    The state of the game

    Hello everyone! There hasn't been any news regarding the game for a while. Today I want to tell you what happened to the game, why I stopped the development, and what will happen next. The game is being retired I have made an official request to Steam to retire the game. It means that the game won't be publicly listed on Steam, yet those who have it in their library will still have access to it (you will still be able to download it, uninstall it, and play it). All your progress (runes, skills, stats, etc.) will be saved. The Steam community page still should be available, but I am not going to monitor it anymore and I have deleted all the content that I posted there, including guides. Achievements and Leaderboards still should be available, but there won't be new leaderboard seasons, the current season 2 will be the last one. Regarding DLCs, you will still be able to use all the DLCs that you purchased before and there will be the final sale with a huge discount for all of them for 7 days starting from tomorrow (October 10), so people who want to have them will have the opportunity to get them. Since some DLCs (premium heroes) are required to complete all the achievements, this might be the last opportunity to buy them and complete the game. After 30 days there is a big chance that all DLCs will be retired too and you won't be able to buy them anymore (but again, those DLCs that you already own will stay with you). You can learn more about the process of retirement here: https://partner.steamgames.com/doc/store/retire_app See the last question in the FAQ section. According to Steam rules, it's impossible to delete the game completely. Plus, deleting the game completely wouldn't be fair to people who had a lot of progress in it and/or purchased DLCs. Why am I closing the game? This game was made in a very dark period of my life. I felt like I have to express certain feelings and emotions in the form of art. I did enjoy working on the game and it took me more than a ...
    Read full article on Community Announcements (Eugene)

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