Loading a specific world from a title screen depends on the game you're referring to. If you're asking about a popular sandbox game like Minecraft, here's how you can do it:
Minecraft Example: Launch the Game: Start the game and wait for the title screen to load.
Select "Singleplayer": Click on the Singleplayer button. This will show a list of all saved worlds on your device.
Choose Your World: From the list of saved worlds, select the one you want to load. Use the arrow keys or your mouse to highlight it.
Click "Play Selected World": Once the desired world is highlighted, click the Play Selected World button. This will load the world and place you in it.
Optional: Search for Worlds: If you have many saved worlds, you can sort them by last played or name for quicker access.