A very serious local coop game about scratching somebody's back. Play the first game here (single-player).

Made during #ALTCTRL by a developer who has occasionally scratched a back. With music by Insidebeat.


  • This game requires you to hold your keyboard on your back. If you're using a laptop you'll need to plug in an external keyboard.
  • This is a coop game, you will need two people to play. If you're looking for a single-player game, try the first one. In this game, one player isn't allowed to see the screen, use props if necessary to restrict their vision.
  • Some keyboards don't work properly with certain combinations of 3 or more keys (but the game doesn't really require them, that's only useful for cheating).
  • Button mashing is for cheaters. Plus you could press a key that closes the game.
  • The game supports QWERTY, QWERTZ, and AZERTY keyboard layouts. You can switch them from the menu (press escape during the tutorial to go to the menu).
PlatformsWindows, macOS, Linux, HTML5
Rated 5.0 out of 5 stars
(4 total ratings)
Made withConstruct
TagsArcade, Casual, Comedy, Controller, Experimental, Funny, Local multiplayer, party-game, Short, weird
Average sessionA few seconds


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Click download now to get access to the following files:

tiesimulator_source_sequel.c3p 709 kB
back_scratching_2023_win64.zip 109 MB
back_scratching_2023_mac64.zip 123 MB
back_scratching_2023_linux64.zip 126 MB


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I may not have played this game yet, but what am I supposed to do?

It's a coop game for two people playing using the same computer. One person looks at the screen and is given instructions (but can't use the keyboard). The other person is able to press keys but doesn't know what's going on. The first player will direct the second saying things like "a little bit to the left", which is supposed to mimic what happens when somebody is scratching your back.


Your game is amazing. I love the minimalist aesthetics that you developed both for Tie Sim and Back Scratching sim. I'm hoping for a bundle of games making a weird use of a keyboard in the coming years <3 A recap video of the jam entries is available on 


OMG THE IDEA IS SO CUTE I can't wait to play it with my gf

love only


Very serious! Love it


Super cool 👏


im the best at this game