How to Save in SimCity 3000 / Theme Park World (PC)

In SimCity 3000 (often confused with Theme Park World), saving is straightforward. For SimPark / Sim Theme Park / SimCity 3000:

SimCity 3000 (Maxis, 1999)

• Manual Save: Press F5 anytime → Save dialog. Or: File → Save / Save As.
• Autosave: Options → Auto-save interval (5, 10, 15, 30 min). Enable.
• Compatibility (Win10/11): Right-click executable → Properties → Compatibility → Run in compatibility mode for Windows XP SP3 / Windows 98/ME. Run as Administrator. Disable fullscreen optimizations.

Sim Theme Park / SimPark (Bullfrog, 1999)

• Save: Press F5 or click Options → Save Game.
• No Autosave: You must save manually. Frequent saves recommended.
• Compatibility: Same as above. May need dgVoodoo2 or dxwnd for graphics.

SimCity 4 (2003)

• Ctrl+S or File → Save. Autosave configurable.

Key Point: "Theme Park World" is the European name for Sim Theme Park (Bullfrog/EA). It has no autosave. Press F5 or use Options menu. Run in compatibility mode on modern Windows.