System Arrival 0.6.1: Story Co-op, Difficulty Options and Smoother Gameplay

Hello, survivors!

Version 0.6.1 will let you play through System Arrival with friends. We have added story co-op, shared bunker management and tools to coordinate your expeditions. Difficulty options and hardcore mode are also here, alongside improvements to the tutorial, saving and visual effects.

Multiplayer is still being tested. You may encounter connection errors, synchronization issues and other bugs when playing together. Please report them in the Steam discussions and, if possible, describe what happened before the problem occurred.

Survive together

Up to four players can take part in one game. Once you have completed the bunker tutorial, you can open your save to friends. Join through the friends' games list, a Steam invitation or a lobby code.

You play in a shared world with common story progression. Players' actions on expeditions count toward quests, while the journal and current objectives stay synchronized. The world and story progress are saved by the host.

Co-op is also supported in the demo: demo players can join other demo players.

One bunker, shared decisions

Each player can take control of an available resident, give them orders and head out on an expedition. The interface shows who controls each character.

Together, you can build and upgrade rooms and manage research, treatment and generators. Bunker resources are shared, and the state of buildings and residents is synchronized between players.

Speeding up time requires everyone's agreement and is available when all players are in the bunker. In co-op, time continues to pass while windows and menus are open.

Stay together more easily on expeditions

Friends appear on the map and minimap. The party panel shows their health, stamina and psi energy.

Press Z to place a temporary marker visible to other players in the location: point out a direction, danger or meeting spot. Weather and in-game time are also synchronized.

The dog remains a shared companion: it accompanies one player and becomes available for the next expedition after returning to the bunker.

Choose your challenge

Three difficulty levels have been added. They affect enemy strength and numbers, how quickly needs are depleted, loot amounts, construction costs and raid strength. In a normal playthrough, you can change the difficulty as you play.

For those ready to put everything on the line, there is now hardcore mode . It locks the game to high difficulty: the death of any character ends the playthrough, and that save slot can no longer be continued.

Tutorial and progression

We have refined the first quests, dialogues and hints for specific actions. The backpack-equipping step is clearer, and using psi support during the tutorial is now optional.

Choosing a skill on level-up now features card animations, sparks and new sound effects.

Smoother gameplay and important fixes

• Reduced saving delays in the bunker, including when residents change activities or orders.
• Added initial graphics settings selection based on your hardware.
• Refined enemies' reactions to car alarms and screams: noise can attract reinforcements.
• Improved destructible windows and doors, as well as collisions with building floors.
• Fixed the application of fog settings and restoration of your selected volume after scenes load.
• Refined story scenes, grass rendering in those scenes, translations and hints. Added credits for the team and music creators.

Thank you for your feedback and bug reports! Tell us in the Steam discussions how your shared survival is going and what else could be improved.