The Binding of Isaac controls can stop working on Steam Deck when Proton, Steam Input, or the active controller layout misreads the game. Start with the fixes that change launch compatibility and controller mapping, then move to system checks only if Isaac still ignores input.
Force Proton 9.0-4 First
Proton 9.0-4 fixes Isaac when the game opens but Deck controls are detected incorrectly. Open Library, then select The Binding of Isaac: Rebirth. Press the gear icon and open Properties....
Choose Compatibility, then turn on Force the use of a specific Steam Play compatibility tool. Select Proton 9.0-4 and press Play. Steam downloads Proton 9.0-4 first when it is not installed.
Clear a Bad Proton Override
The most common cause after a SteamOS, game, or Proton update is an old compatibility override that no longer handles Isaac correctly.
Open Library and choose The Binding of Isaac: Rebirth. Press the gear icon and open Properties.... Go to Compatibility, then clear Force the use of a specific Steam Play compatibility tool to return Isaac to Steam's default choice.
If Proton 9.0-4 does not solve it, enable Force the use of a specific Steam Play compatibility tool again. Select Proton Hotfix, Proton Experimental, or another Proton version from the drop-down, then launch the game with Play.
Apply a Known-Good Steam Input Layout
Use this when Isaac launches, but the controls are blank, keyboard-only, or mapped to the wrong actions.
- 1.Open Library and select The Binding of Isaac: Rebirth.
- 2.Press the controller icon or gamepad icon.
- 3.Open Current Layout.
- 4.Choose Templates or Community Layouts.
- 5.Select an official gamepad-style layout or a highly rated community layout.
- 6.Press Apply Layout.
Fix One Wrong Button Manually
Open Library and select The Binding of Isaac: Rebirth. Press the controller icon or gamepad icon, then choose Edit Layout.
Open Buttons, D-Pad, Joysticks, or Triggers. Assign the Steam Deck control to the Gamepad or Keyboard command you want. Press Back, then launch Isaac with Play.
Use manual remapping for one or two bad buttons; switch layouts when most controls feel wrong.
Adjust Steam Input Overrides
When Isaac sees no gamepad input, open Library, choose The Binding of Isaac: Rebirth, press the gear icon, open Properties..., select Controller, open Override for The Binding of Isaac: Rebirth, choose Enable Steam Input, and restart the game.
When an external controller sends doubled or scrambled input, return to Override for The Binding of Isaac: Rebirth, choose Disable Steam Input, and restart Isaac. Use that external-controller fix for external controllers, because built-in Deck controls normally depend on Steam Input.
For Isaac's own mappings, launch The Binding of Isaac: Rebirth, open Options, choose Controls, select the input or action to remap, and press the new key or button.
Use Reset to Default in the Controls menu when Isaac's in-game mappings are confused.
Reset Controls Inside Isaac
Launch The Binding of Isaac: Rebirth from Library. At the main menu, open Options and choose Controls. Select the input or action you want to remap, then press the new key or button.
Use Reset to Default in the Controls menu when the mappings are confused. After resetting in-game controls, keep the Steam Input layout simple so Isaac uses one clear mapping.
Test the Deck Controls Outside the Game
The most common sign of a system-level problem is that the same button fails in SteamOS, not just inside Isaac.
Press the Steam button, open Settings, choose Controller, and select Test Controller Inputs. Press the sticks, D-Pad, face buttons, bumpers, triggers, and trackpads, then confirm each control appears on the test screen.
If the Steam Deck is powered on but inputs are frozen, press Steam, open Power, and choose Restart. For a force restart, hold the power button for 4 seconds on Steam Deck LCD or 7 seconds on Steam Deck OLED.
Update, Verify, or Reinstall
Use this path when Isaac still ignores controls after Proton and Steam Input changes. It also applies after a failed update, interrupted DLC install, or corrupted local files.
Press the Steam button, open Settings, and choose System. Install available items under Software Updates, then restart when prompted.
Open Library and select The Binding of Isaac: Rebirth. Press the gear icon, open Properties..., choose Installed Files, and select Verify integrity of game files.
If verification does not fix the controls, open Library and select The Binding of Isaac: Rebirth. Press the gear icon, choose Manage, and select Uninstall. Install the game again from Library or the Steam Store page.
Check External Controllers and Special Play Modes
Press the Steam button, open Settings, choose Bluetooth, and enable Bluetooth. Put the controller in pairing mode, then select the controller from the Bluetooth device list.
For a USB controller, connect it through USB-C or a dock. Launch Isaac and test input.
If Isaac listens to the wrong controller, launch the game with multiple controllers connected. Open the Quick Access Menu, go to Quick Settings, and choose Rearrange controller order or Reorder Controllers.
Move your controller to slot 1. You can also press the Steam button in-game, open Controller Settings, and choose Reorder Controllers.
For Desktop Mode, press Steam, open Power, and choose Switch to Desktop. Keep the Steam client running before launching Steam games in Desktop Mode. For steadier Steam Input behavior, return to Gaming Mode and launch Isaac from Library.
On Steam Link, open Settings, choose Streaming, open Advanced Options, and enable input streaming. For Remote Play streamed through the Steam client on Steam Deck, press the Steam button, open Settings, choose Remote Play, and turn on Enable Advanced Client Options to reach the client streaming controls.
If streamed games do not recognize any controller, check whether Steam Big Picture recognizes it in controller settings on the client computer. Use Steam + X for the on-screen keyboard, and hold the Steam button when you need the Deck shortcut list during troubleshooting.
Frequently Asked Questions
Is The Binding of Isaac verified for Steam Deck?
Yes. The Steam Store lists The Binding of Isaac: Rebirth as Steam Deck Compatibility Verified with integrated controller support.
What should I try first if Isaac controls do nothing on Steam Deck?
Force The Binding of Isaac: Rebirth to use Proton 9.0-4, then apply a gamepad-style Steam Input layout if the controls are still wrong.
Should I disable Steam Input for built-in Steam Deck controls?
Use Enable Steam Input for built-in Deck controls. Disable Steam Input only for external controllers with doubled or scrambled input.
When should I factory reset the Steam Deck?
Use Factory Reset only when controls fail across other games or SteamOS settings too. Back up anything not in Steam Cloud first.