The PSP version of The Sims 2 does not have Freeplay / Open / Sandbox mode. It is a linear, story-driven port with distinct limitations:
| Feature | PC / Mac | PSP |
|---|---|---|
| Freeplay / Sandbox | ✅ Full | ❌ None |
| Build / Buy Mode | ✅ | ❌ |
| Create-a-Sim | ✅ Deep | ❌ Presets only |
| Aging / Life Stages | ✅ | ❌ |
| Generations / Genetics | ✅ | ❌ |
| Expansion Packs | 8 EPs + 9 SPs | ❌ |
Verdict: PSP version is a companion experience, not a portable Sims 2. For sandbox play, use PC.