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About Sineus Arena Survivors

Sineus Arena Survivors is a third-person 3D bullet heaven for solo play or 2–4 player co-op. You fight hordes of the Gloom, level up your hero, collect weapons and artifacts, and build structures and towers during combat. Fighting, building and survival happen at the same time, with no pauses for decisions.

The Beacon and your base

The Beacon is the heart of your settlement and its last line of defense. Keep it burning to give your team a chance; if it falls, darkness consumes everything. You upgrade the settlement, reinforce its defenses and stop enemies from reaching the Beacon.

Runs beyond the walls

You can venture beyond the base to search for rare resources, chests, altars, trials and enemy lairs. The farther you go from the Beacon, the greater the risk and the more valuable the rewards. You can stay behind the walls or take these risks in pursuit of loot and rare rewards.

Co-op and combat

In co-op, you can revive fallen allies, split roles and decide who holds the line while another player ventures out for loot. You combine weapons, passive upgrades and artifacts to develop a build for surviving invasions and the final battle. Each run offers another chance to find a build that can hold up.

Heroes and equipment

At launch, the game includes 10+ heroes with different archetypes and combat styles, 5 factions with unique allies and visual identities, 25 weapons, 18 types of upgrades and 50+ artifacts. It also includes skins, quests, achievements and meta-progression.

Progression and matches

You earn currency by surviving, killing enemies and completing quests. The Magic Chest and its upgrade collection let you unlock heroes, weapons, skins, boosts and other rewards.

A match lasts 10 minutes or longer and continues until you move to the next biome difficulty level, complete all three stages for a full victory, or fall to the endlessly scaling final waves. You can defeat the boss, activate the Beacon and push forward, or keep fighting for a record for as long as your build holds. The game has 13 building types, which you can place mid-wave without pausing combat.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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