Check who can send and receive
Start with a Steam account that already has this playtest’s access. The game’s displayed allowance is up to three friends. Valve’s platform rule requires a Steam friendship of at least 30 days; the developer can pause invitations or restrict eligible senders.
Those three invitations are admission places, not a session-size limit. Every invited friend still needs to accept and install through their own account. Co-op covers the separate group-play task.
Sources: Steam: official game listing Valve: Steam Playtest documentation
Send through Steam; accept on the invited account
Sender: use the playtest’s Steam invite control
Sign into the admitted account and use the Friend Invites control Steam currently offers for the test. Select an eligible Steam friend; if that control is absent, do not assume the store’s historical allowance remains available to your account.
Recipient: check the notification or store page
Valve says the recipient receives a Steam notification and can also see invite status on the base game’s store page. Use the invited account to open and accept it.
Recipient: confirm the entitlement
Check for the playtest in that account’s Library, then use the download guide. Accepting an invite and launching a currently playable build are separate checks.
This combines the game’s stated allowance with Valve’s documented platform flow. The live game-specific sender controls have not been tested using an admitted account.
Sources: Valve: Steam Playtest documentation Steam: official game listing
If the invitation is missing or unusable
- Check the recipient Steam account and the 30-day friendship requirement.
- Ask the sender to check remaining allowance and whether their account currently has an invitation control.
- Look in Steam notifications and the official base-game store page rather than expecting a key or Discord role.
- If acceptance succeeds but the game will not launch, distinguish a missing install from a test that is currently not playable.
The optional AI service grants neither invitation eligibility nor admission. For account-status questions, return to playtest access.
Sources: Valve: Steam Playtest documentation Publisher: Unlimited AI terms