The implementation of the feature is game-specific and up to the developers of the game. Some developers choose to only sync save game data, or both save game data and configuration files, yet others force users to choose only a single slot to be synced. Some games list Steam Cloud as a supported feature, but do not sync any data whatsoever.
The save file, GameDataSlotxv011.sav, will take up the x'th save slot in your game (counting starts at 0). By default this is 1, and so if you wish to keep your own save files, make sure to back them up and/or rename the x to whichever slot you prefer.

Turnover has been updated to v1.0.832. This updates brings a number of new features, changes, and fixes.

May 28, 2013 Steam cloud is a feature of steam client that allows game data to be synced to the cloud. Here you will be able to continue a game on another PC such as.

Save Slots and Steam Cloud Support

Turnover now has 3 save slots available in game.

To start a new game, select 'New Game' in the Main Menu, then choose a save slot.
To continue the previously started game, chose 'Continue Game' from the Main Menu.
To load another save, choose 'Select Save' from the main menu, then 'Continue Game' to resume your game.
Save games prior to this update will be converted over to Save Slot 1 on first launch, so you should not lose your progress prior to this update.

With this update, Turnover has Steam Cloud support for the 3 save slots.

XInput for Windows (with Force Feedback Rumble)

Steam Game Save Data

XInput is now used in the Windows build if the game detects an XInput controller. This should fix all current quirks and issues with Xbox 360/One controllers. If you are planning on playing Turnover with a controller, a Xbox 360/One controller is now the recommended controller to use in Windows.
In addition, Turnover now uses Force Feedback rumble with Xbox controllers (in Windows) for many in game actions. It can be enabled/disabled in the Binds menu when a XBox controller is selected in the Options menu.
Note:
The latest version of x360ce has been tested to work with Turnover. If you are using a non Xbox controller and want the Xbox context hints in-game, then this is an option for you to try out.

New Input Context Icons

Turnover can now be played with a keyboard/mouse and a controller together, so you can swap between the two on the fly. HUD context icons will dynamically change based on the last input method.
Also, the old text based HUD Hints for input have been replaced with icons. This should give nicer visual cues for input.

Full Changelog

Steam Games With Only 1 Save Slot