PS4 Cross-Gen

Features

Not all PSN features available on PS5 can be used on the PS4. The follow table shows which Cross-gen features are supported.

Feature	PS4	Notes
Authenticaton	Yes
Entitlements
Feature Gating
Game Intent	Yes	PS4 only support JoinSession invite type, see below for details
Online Safety	Yes	Profanity filter and test
Player Sessions	Yes
Sessions Manager	Yes
Trophy System
Universal Data System
User System	Yes	Presence, Friends, Profiles
WebApi Notifications	Yes

SDK Instalation

This requires downloading the PS4 Cross-gen zip from the Prospero SDK manager. The zip needs copying into the PS4 SDK folder, typically reference SCE_ORBIS_SDK_DIR environment var.

For details on how to install cross-gen for the PS4 see SIE documention: https://p.siedev.net/resources/documents/SDK/1.000/Cross_Generation-Overview/0004.html

Module

A new module needs adding to the modules list in the PS4 publishing settings. Add libSceNpCppWebApi.prx to the modules list.

Param.json

The PS4 requires a limited param.json file to support.

{
  "gameIntent": {
    "permittedIntents": [
      {
        "intentType": "joinSession"
      }
    ]
  }
}

Cross-gen Invites

Invites are recieved by the PS4 via GameIntent which requires the above param.json file to be in the sys_sys folder.

For invites to work between PS5 and PS4 the Session Manager Communication Ids need to match. The Session Manager service is shown on the PS5 "Services" tab for the product and on the PS4 "Cross-gen" tab. The IDs for these serivces must match for sessions and invites to work.

Sample

The sample will run on the PS4 with a reduced set of features, see the table above.

When setting up the sample using the menu the "SCE Publishing Utils -> Set Publish Settings for PS4".