The Sims Agents (Wii) — No Submarine Exists

There is no submarine in The Sims Agents for Wii. The game is a spy-mystery adventure with land-based investigation—no underwater vehicles or areas.

If You Want Submarine Gameplay

• Subnautica (PC, PS4/5, Xbox One/Series, Switch) — Open-world underwater survival, build subs (Seamoth, Cyclops)
• Subnautica: Below Zero — Arctic expansion, Seatruck modular sub
• Iron Lung (PC, Switch) — Horror, tiny sub, blood ocean
• Barotrauma (PC) — Multiplayer sub simulator, chaos
• The Sims 2: Castaway (Wii/PS2/DS/PSP) — Island survival, diving, no sub

The Sims Agents (Wii) Actual Content

• 5 cases + tutorial
• Gadgets: Scanner, crowbar, wrench, camera, bug net
• Minigames: Lockpicking, hacking, chemistry, forensic analysis
• No vehicles, no water traversal

Charming detective game. Just not a submarine sim.